BMW Engine Parts

Athena Cut Ring Head Gasket - 84.5mm - BMW M50 M52 (84mm Bore) ...

T#:26171655

Part#: ATH-HG-CR-M50-84

In Stock

$ 324.99 USD

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$ 324.99 USD

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Upgrade your BMW engine's performance with the Athena Cut Ring Head Gasket. This gasket replaces BMW part # 11121726619 and 11121726617 and is specifically designed for M50 & M52 iron block inline 6-cylinder engines found in E34/E36 chassis. Standard OEM & MLS gaskets can only handle a certain amount of cylinder pressure before they start to leak, making the Athena Cut Ring Head Gasket the recommended choice for applications making 16+ psi. A compression leak passing the head gasket can cause a range of issues, including engine overheating, loss of power, misfires, and in severe cases, catastrophic engine failure. Athena's gasket is crafted with premium quality reinforced M0115, an asbestos-free material that's original equipment approved and renowned for its superior quality. The AISI 304 stainless steel Cooper Rings bite into the aluminum head, providing maximum sealing capabilities around the cylinder bore and optimizing engine performance, even on engines with nitrous and/or turbo applications that exceed 2-bar boost. Before installation, it is crucial to have the mating surfaces of the cylinder head and block professionally cleaned and resurfaced to ensure they are completely flat. Please be aware that the gasket should have a size that is 0.5mm to 1mm larger than the piston. For example, if the piston measures 84mm, then the gasket should be the next size up, either 84.5mm or 85mm. Installation instructions: Make sure that the engine block and cylinder head surfaces are clean, flat, and free from any debris, oil, or coolant. Install the Cut Ring gasket on the engine block and ensure that it is properly aligned. Avoid twisting or bending the gasket during installation. Place the cylinder head on top of the gasket and install the head bolts or studs in their correct positions. Follow the manufacturer's recommended torque specifications and tighten the bolts or studs in the proper sequence to ensure even clamping force across the gasket. After the initial tightening, re-torque the head bolts or studs after the engine has been started and then allowed to cool to room temperature. This will ensure that the gasket is properly seated and compressed. It is recommended to not use any additional sealant on the MLS gasket, as it is already coated with a Viton rubber sealant. Using additional sealant can hinder the performance of the gasket.

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5150 AutoSport S54 VANOS Hub

T#:35154980

Part#: 5150-VANOS

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$ 679.99 USD

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$ 679.99 USD

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Cometic MLS Head Gasket - 85mm Bore - .140in - M50B25/M52B28 ...

T#:26738398

Part#: C4328-140

In Stock at Vendor

$ 277.99 USD

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$ 277.99 USD

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Multi-Layer Steel gaskets are comprised of multiple embossed layers of both proprietary high-temperature coated and uncoated stainless steel, requiring less clamp load, creating less bore distortion, and conforms load distribution across the sealing area. The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers. The stainless steel outer layers utilize FKM (Viton®) rubber coating, a high-temperature and chemical-resistant polymer. A topcoat of PTFE aids in resistance to fret and increased cold sealing.

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Cometic MLS Head Gasket - 87mm Bore - .080in - BMW S50B30US/S52B32 ...

T#:26738395

Part#: C4329-080

In Stock at Vendor

$ 262.99 USD

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$ 262.99 USD

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Multi-Layer Steel gaskets are comprised of multiple embossed layers of both proprietary high-temperature coated and uncoated stainless steel, requiring less clamp load, creating less bore distortion, and conforms load distribution across the sealing area. The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers. The stainless steel outer layers utilize FKM (Viton®) rubber coating, a high-temperature and chemical-resistant polymer. A topcoat of PTFE aids in resistance to fret and increased cold sealing.

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Cometic Multi-layer Steel Head Gasket - B58

T#:25241786

Part#: COM-HG-B58G1

In Stock

$ 244.99

This product was last offered at the strikethrough price on
05-06-2026

$ 226.99 USD

Limited Qty Sale

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$ 244.99

This product was last offered at the strikethrough price on
05-06-2026

$ 226.99 USD

Limited Qty Sale

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Constructed with multiple layers of stainless steel and a proprietary coating, the MLX gasket offers superior sealing and load distribution capabilities. The coating is designed to withstand high temperatures and pressures, preventing gasket failure due to fatigue or stress. Additionally, the unique embossed sealing bead provides further sealing ability.

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Ferrea High Performance Valve Spring Kit for BMW N55/S55

T#:23416526

Part#: FER-HPVSK-N55

Ships in 4 Business Days

$ 1,049.99 USD

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$ 1,049.99 USD

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Maximize your N55 or S55 engine's performance with Ferrea Valve Springs and Retainers, precision components crafted from chromoly alloy. These springs undergo special thermal treatment, ensuring exceptional durability even in extreme racing conditions. Addressing issues like valve binding, breakage, and float, Ferrea valve springs are meticulously heat-treated and stress-relieved, providing stability for high-lift and high-RPM racing engines while minimizing load loss. Precision CNC machined titanium retainers offer superior strength and stability. Ferrea's Spring Seat Locators, made from 4140 chromoly alloy, guarantee precise tolerances and a flat, parallel spring pad with a hard Nitride surface treatment for exceptional toughness and anti-wear characteristics. Please note that installation requires the expertise of an engine builder.

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Performance Rod Bearing Kit - S54

T#:26171617

Part#: 5150-HPRBK-S54-E

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$ 669.99 USD

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$ 669.99 USD

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Now one of 5150's best sellers has gotten even better! With a 5150 Autosports' complete High-Performance Rod Bearing Kit, you get all the parts you need to easily swap out the factory connecting rod bearing shells and bolts in one simple kit. 5150's S54 bearings are embraced by BMW engine builders worldwide. Popular for both forced induction and N/A builds, their coated bearings are "friction resistant" making thermal breakdowns that can occur due to lack of lubrication a much less common occurrence. Helping to prevent premature engine failures on street cars, and spun bearings under stress at the track when things are most critical. Proven by customers to help you finish the race even with loss of oil pressure! Kit includes: (1) Complete set of ARP S54 Connecting Rod Bolts (1) Complete set of 5150 High Performance Rod Bearing Set (1) ARP Assembly Lubricant packet Tech Notes: As with all bearings, please check your tolerances and size before installation. Due to the specialized tools needed, professional install recommended. There are no returns available on any engine bearings.

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AAF Oil Level Block Off Plate - E30 M20

T#:7608876

Part#: 116205

In Stock

$ 25.00 USD

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$ 25.00 USD

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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. AAF's M20 oil level block off plate for the E30 eliminates the OEM oil level sensor. On the M20 there is an oil level sensor on the oil pan that can be deleted in dedicated motorsports cars. This will allow you to remove a small bit of weight by getting rid of the oil level sender and associated wiring which goes all the way up to the overhead panel. By deleting the plug what you are also doing is eliminating another point of failure and clutter in the engine bay. Includes: Oil level block off plate Two locking nuts Two washers Shown on pan for reference.

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S55B30T0 85mm Bore .044in MLX Head Gasket

T#:22064604

Part#: C14133-044

In Stock at Vendor

$ 194.99 USD

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$ 194.99 USD

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Cometic is the industry standard when upgrading the head gasket on your high performance BMW. These MLS (Metal Layered Steel) head gaskets are many enthusiasts’ choice when adding more boost or simply bulletproofing your current setup! Designed for high-performance applications, Cometic Head Gaskets are sure to stand up to the task!

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Cometic Gasket For N54

T#:26071905

Part#: H4293SP1052S

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$ 253.99 USD

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$ 253.99 USD

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Upgrade your BMW 135i, 335i, X6, or Z4 with the Cometic 85.5mm Bore .052in MLX Head Gasket.

This high-quality gasket ensures a reliable seal for your engine's cylinder head, preventing leaks and maintaining optimal compression. Crafted with precision and durability in mind, it offers superior performance and longevity, making it an ideal choice for BMW enthusiasts seeking reliable engine components.

Provides a reliable seal for the cylinder head
Prevents leaks and maintains optimal compression
Crafted with precision for superior performance
Durable construction ensures longevity
Compatible with BMW 135i, 335i, X6, and Z4 models

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Cometic Head Gasket - BMW S65B40 - 0.040" Thick

T#:19428661

Part#: C5112-040

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$ 144.99 USD

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$ 144.99 USD

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Multi-Layer Steel gaskets are comprised of multiple embossed layers of both proprietary high-temperature coated and uncoated stainless steel, requiring less clamp load, creating less bore distortion, and conforms load distribution across the sealing area. The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers. The stainless steel outer layers utilize FKM (Viton®) rubber coating, a high-temperature and chemical-resistant polymer. A topcoat of PTFE aids in resistance to fret and increased cold sealing.

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Cometic Head Gasket - S58 0.055" Thick

T#:26038595

Part#: COM-C15696-055

Ships in 4 Business Days

$ 229.99 USD

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$ 229.99 USD

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Cometic is the industry standard when upgrading the head gasket on your high performance BMW. These MLS (Metal Layered Steel) head gaskets are many enthusiasts’ choice when adding more boost or simply bulletproofing your current setup! Designed for high-performance applications, Cometic Head Gaskets are sure to stand up to the task!

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Performance Rod Bearing Set - M5X

T#:26171648

Part#: 5150-HPRBS-M50

Ships in 4 Business Days

$ 219.99 USD

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$ 219.99 USD

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5150 High-Performance Coated Rod Bearing Sets are made for the demands of high-performance engine builds. Treated shells and coated by Calico to reduce friction, these bearings allow your engine to generate more power and resist "spinning" under stress. These coated bearings also have thermal resistant properties that not only perform in high HP applications like forced induction or race use, but also help prevent sudden engine failure in the event of oil pressure loss. 5150 bearings have proven themselves on and off the track, lasting longer and outperforming other bearings on the market. Tech Notes: As with all bearings, please check your tolerances and size before installation. Due to the specialized tools needed, professional install recommended.

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CP-Carrillo Pro-Xtreme Connecting Rod Set - BMW N63/S63

T#:23681818

Part#: CAR-CRS-S63-XTT

Ships in 4 Business Days

$ 2,999.99 USD

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$ 2,999.99 USD

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Tailored for exceptional performance, the Pro-Xtreme design is crafted to handle up to 2000 horsepower and 9500 RPM. Constructed from high-strength, aircraft-grade steel, these connecting rods feature a tapered small-end, allowing them to be paired with your OEM pistons.

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Performance M5X Main Bearing Set

T#:26171649

Part#: 5150-HPMBS-M50

Ships in 4 Business Days

$ 299.99 USD

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$ 299.99 USD

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5150 High Performance Coated Main Bearing Sets are made for the demands of high performance engine builds. Treated shells and coated by Calico to reduce friction, these bearings allow your engine to generate more power and resist "spinning" under stress. These coated bearings also have thermal resistant properties that not only perform in high HP applications like forced induction or race use, but also help prevent sudden engine failure in the event of oil pressure loss. 5150 bearings have proven themselves on and off the track, lasting longer and outperforming other bearings on the market. Tech Notes: As with all bearings, please check your tolerances and size before installation. Due to the specialized tools needed, professional install recommended.

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ARP Head Stud Kit - B58 - ARP2000

T#:25241790

Part#: B58-S-203-4705

Ships in 4 Business Days

$ 399.99 USD

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$ 399.99 USD

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This ARP2000 Head Stud Kit 203-4705 is designed for the turbocharged inline 6-cylinder B58 engines found in various BMW chassis and the Toyota GR Supra A90/A91. As you increase the power output of your engine beyond its factory specifications, the head and block may start to separate, causing factory bolts to stretch and fail. ARP Head Studs are stronger than factory bolts, ensuring your race engine stays together even under extreme conditions.

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Athena Cut Ring Head Gasket S63/N63

T#:26238393

Part#: ATH-HG-CR-S63-90

Ships in 4 Business Days

$ 399.99 USD

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$ 399.99 USD

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Athena-SCE's gasket body is composed of Motorgasket, a reinforced material developed by Athena's R&D department. This consists of a steel core covered with two layers of asbestos-free aramid fibre and offers excellent thermal and mechanical resistance without compromising its ability to adapt to mating surfaces. To ensure maximum sealing under all conditions, a silicone bead is also applied to critical sealing areas, such as oil and coolant passages. The AISI 304 stainless steel cooper rings bite into the aluminum head, providing maximum sealing around the cylinder bore and optimizing engine performance, even on engines with nitrous and/or turbo applications that exceed 2 bar boost. Please be aware that the gasket should be 0.5mm to 1mm larger than the piston. For example, if the piston measures 84mm, then the gasket should be the next size up, either 84.5mm or 85mm. Before installation, it is crucial to have the mating surfaces of the cylinder head and block professionally cleaned and resurfaced to ensure they are completely flat. Sold as a set - Includes Bank 1 and Bank 2 Gaskets Make sure that the engine block and cylinder head surfaces are clean, flat, and free from any debris, oil, or coolant. Install the Cut Ring gasket on the engine block and ensure that it is properly aligned. Avoid twisting or bending the gasket during installation. Place the cylinder head on top of the gasket and install the head bolts or studs in their correct positions. Follow the manufacturer's recommended torque specifications and tighten the bolts or studs in the proper sequence to ensure even clamping force across the gasket. After the initial tightening, re-torque the head bolts or studs after the engine has been started and then allowed to cool to room temperature. This will ensure that the gasket is properly seated and compressed. It is recommended to not use any additional sealant on the MLX gasket, as it is already coated with a Viton rubber sealant. Using additional sealant can hinder the performance of the gasket.

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5150 AutoSport High Performance Main Bearing Set, BMW S55

T#:23416567

Part#: 5150-HPMBS-S55

Ships in 4 Business Days

$ 549.99 USD

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$ 549.99 USD

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CP Forged Piston Set - N63 - Pro-Xtreme 9.5:1

T#:26238409

Part#: CP-FPS-N63-XT-HD

Ships in 4 Business Days

$ 2,464.99 USD

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$ 2,464.99 USD

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The 5150 AutoSport Pro-Xtreme Forged Pistons, made by CP-Carrillo, are designed to handle extreme horsepower and high RPM applications for BMW N63 engines. Constructed from high-strength, aircraft-grade steel, these pistons are engineered to withstand the forces generated by high-powered engines. The Pro-Xtreme Piston design is specifically engineered to handle up to 2000 horsepower, making these pistons suitable for high-performance turbo/drag racing or street/strip applications. They are also designed to handle high engine speeds of up to 9500 RPM, which is necessary for achieving maximum power output. Each piston is precisely fabricated to meet the demands of high-performance engines using advanced manufacturing techniques such as computer-aided design (CAD) and finite element analysis (FEA). The Pro-Xtreme Pistons are designed to be durable, reliable, and capable of handling the extreme stresses and forces generated by high-horsepower and high-rpm engines. Includes: - Pistons - HD Wrist Pins - PVD Rings - Pins - Locks - Spec Sheet

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Performance Cylinder Head Gasket - 0.044 Inch

T#:25971916

Part#: C4617-044

In Stock at Vendor

$ 93.99 USD

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$ 93.99 USD

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CP-Carrillo Connecting Rod Set - N63/S63 Pro-Xtreme

For Use With Aftermarket Pistons Only!

T#:26238404

Part#: CAR-CRS-S63-XT

Ships in 4 Business Days

$ 2,899.99 USD

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$ 2,899.99 USD

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5150 AutoSport Pro-Xtreme Connecting Rods, manufactured by CP-Carrillo, are designed to handle extreme horsepower and high RPM applications for BMW N63 and S63 Engines. The Pro-Xtreme design is specifically tailored to handle up to 2000 horsepower, making them suitable for high-performance turbo/drag racing or street/strip applications. They are also designed to handle high engine speeds of up to 9500 RPM, which is necessary for achieving maximum power output. Each connecting rod is precisely engineered to meet the demands of high-performance engines using advanced manufacturing techniques such as computer-aided design (CAD) and finite element analysis (FEA). The Pro-Xtreme Connecting Rods are designed to be durable, reliable, and capable of handling the extreme stresses and forces generated by high-horsepower and high-rpm engines.

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BMW M54 Main Bearing Performance Set

T#:26171610

Part#: 5150-HPMBS-M54

Ships in 4 Business Days

$ 274.99

This product was last offered at the strikethrough price on
07-07-2026

$ 219.99 USD

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$ 219.99 USD

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BMW M54 Main Bearing Performance Set is engineered to meet the rigorous demands of high-performance engine builds. Designed by Turner Motorsport, these high-performance coated main bearings offer enhanced durability and efficiency for engines subjected to extreme conditions.

High-Performance Coating: Treated with a specialized coating by Calico, these bearings reduce friction and prevent "spinning" under high stress, making them ideal for high-power applications.
Enhanced Power Generation: The coating allows the engine to generate more power while maintaining reliability, even under demanding conditions.
Thermal Resistance: Built to withstand high temperatures and perform effectively in forced induction and race applications, these bearings help prevent engine failure due to oil pressure loss.
Proven Durability: Tested extensively on and off the track, 5150 bearings are known for their longevity and superior performance compared to other bearings on the market.

Upgrade to the BMW M54 Main Bearing Performance Set from Turner Motorsport for a robust solution that enhances engine reliability and performance.

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SP Components Connecting Rod Set - B58

T#:25241785

Part#: SP-CRS-B58

Ships in 4 Business Days

$ 1,099.99 USD

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$ 1,099.99 USD

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SP Components is renowned for their premium aftermarket forged H-beam rods, earning a strong reputation in the industry. These connecting rods, characterized by their lightweight and robust nature, boast an enlarged mating surface that significantly enhances their ability to withstand heavy loads. Specifically engineered to replace BMW part #11248623419 and #11247589671, these rods are tailored for BMW B58 engines featuring a 148mm connecting rod length. In addition to their reliable construction, these rods come equipped with balanced matching weights and include ARP rod bolts. With a robust capacity to endure speeds of up to 8,500 rpm, they are exceptionally well-suited for high-performance applications. Furthermore, these rods demonstrate the capability to meet the demands of high-horsepower forced induction engines generating up to 900HP, providing the added assurance of ARP Connecting Rod Bolts Included.

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ARP Head Stud Kit - S58 - ARP2000

T#:22427026

Part#: ARP-HSK-S58-S

Ships in 4 Business Days

$ 399.99 USD

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$ 399.99 USD

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ARP is the leader in the industry when it comes to upgraded hardware for increased clamping force. Ditch those stock torque to yield single-use head bolts for a stronger, more robust, reusable alternative. The ARP2000 Hardware Included in this kit is a high-tensile strength metal designed with anti-stretching properties in mind.

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POR15 Absolute Coatings Fuel Tank Sealer

T#:1575841

Part#: POR49216

Ships in 7 Business Days

$ 40.99 USD

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$ 40.99 USD

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POR-15 Fuel Tank Sealer was formulated and developed in our own laboratories due to the demand for a high-tech sealer impervious to all fuels, including the new Stage II fuels which have a high alcohol content.

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BMW M60 / M62 Valve Spring Kit

T#:37149877

Part#: 5150-HPVSK-M60

Ships in 4 Business Days

$ 1,399.99 USD

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$ 1,399.99 USD

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BMW S58 3.0L ARP Head Stud Kit - CA625+

T#:22427036

Part#: ARP-HSK-S58-CA

Ships in 4 Business Days

$ 999.99 USD

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$ 999.99 USD

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BMW S58 3.0L ARP Head Stud Kit - CA625+ is the ultimate upgrade for the BMW S58 engine, specifically designed for high-performance models such as the F97 X3M, F98 X4M, G80 M3, G82 M4, G83 M4, and G87 M2. Manufactured by Turner Motorsport, this head stud kit ensures optimal engine reliability and performance.

Enhanced Strength: Featuring Custom Age 625+ material with a tensile strength of 260 ksi, this kit provides superior strength compared to factory bolts.
Prevents Head and Block Separation: Designed to handle increased boost levels and high-stress conditions, preventing potential head and block separation.
Precision Engineering: ARP’s advanced manufacturing process ensures that these head studs outperform standard factory bolts under extreme conditions.
Ideal for High-Performance Builds: Perfect for enthusiasts pushing the limits of their S58 engines, offering unparalleled durability and reliability.
Direct Fit: Specifically tailored for the turbocharged inline 6-cylinder BMW S58 engine, ensuring a seamless installation and optimal performance.

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Performance N55 Main Bearing Set

T#:26238415

Part#: 5150-HPMBS-N55

Ships in 4 Business Days

$ 549.99 USD

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$ 549.99 USD

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5150 High Performance Coated Main Bearing Sets are made for the demands of high performance engine builds. Treated shells and coated by Calico to reduce friction, these bearings allow your engine to generate more power and resist "spinning" under stress. These coated bearings also have thermal resistant properties that not only perform in high HP applications like forced induction or race use, but also help prevent sudden engine failure in the event of oil pressure loss. 5150 bearings have proven themselves on and off the track, lasting longer and outperforming other bearings on the market.

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BMW N55 S55 Ferrea High Performance Valve Kit

T#:23416508

Part#: FER-HPVK-S55-T-3

Ships in 4 Business Days

$ 929.99 USD

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$ 929.99 USD

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Increase the power output of your N55/S55 engine with the high-performance Ferrea valve kit. Renowned as the industry's most reliable extreme-duty valves, they're meticulously crafted from aerospace-grade alloys, employing an exclusive two-step slow forging process for optimal grain flow and material structure integrity. A 48-hour heat treatment and stress-relieving process enhance molecular integrity. The valves feature avionics-quality hard chrome and a specially applied hard tip. Standard size: 32mm intake / 28mm exhaust, with a triple groove valve design. Compatible with factory valve locks ("Valve Keepers"), the kit includes 12x Intake Valves and 12x Exhaust Valves for a comprehensive engine upgrade!

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Cometic MLS Head Gasket - 85mm Bore - .098in - M50B25/M52B28 ...

T#:26738399

Part#: C4328-098

In Stock at Vendor

$ 262.99 USD

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$ 262.99 USD

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Multi-Layer Steel gaskets are comprised of multiple embossed layers of both proprietary high-temperature coated and uncoated stainless steel, requiring less clamp load, creating less bore distortion, and conforms load distribution across the sealing area. The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers. The stainless steel outer layers utilize FKM (Viton®) rubber coating, a high-temperature and chemical-resistant polymer. A topcoat of PTFE aids in resistance to fret and increased cold sealing.

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AAF M20 Oil Pan Baffle (BAFFLE ONLY) - E30

T#:7593089

Part#: 11619

In Stock at Vendor

$ 130.00 USD

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$ 130.00 USD

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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. This oil pan baffle by AAF keeps the oil at the pick up better than others on the market. Baffling the oil pan is extremely important. Under racing and track conditions, oil can move in the oil pan enough to cause extended moments of oil starvation. This can cause premature, and in some cases immediate, engine failure. The pan features a tight fit to keep oil from exiting under braking or cornering. Ten gated holes control oil slosh in the sump. A must have for all track cars. **Note: welding is required to install. Photos of installed baffle for reference.

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Performance Main Bearing Set - S54

T#:26171616

Part#: 5150-HPMBS-S54

Ships in 4 Business Days

$ 342.99 USD

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$ 342.99 USD

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5150 High-Performance Coated Main Bearing Sets are made for the demands of high-performance engine builds. Treated shells and coated by Calico to reduce friction, these bearings allow your engine to generate more power and resist "spinning" under stress. These coated bearings also have thermal resistant properties that not only perform in high HP applications like forced induction or race use but also help prevent sudden engine failure in the event of oil pressure loss. 5150 bearings have proven themselves on and off the track, lasting longer and outperforming other bearings on the market.

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AAF Oil Pressure Sensor Relocate Kit - M20

T#:7593105

Part#: 116177

Ships in 4 Business Days

$ 71.99 USD

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$ 71.99 USD

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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. AAF's Oil Pressure Sensor Relocation Kit allows for an aftermarket low pressure switch as well as oil pressure sensor, or two 1/8' NPT pressure sensors to be installed. This can allow a gauge or light to be on the dash and still log oil pressure in a data logger. This kit also moves the oil pressure sensor away from the engine and onto the chassis (or any other spot) where is it much easier to access, or install larger size diameter sensors. Fits all M20 Engines. Features: 4AN Stainless Steel Braided Line Banjo Bolt and Fitting (installs onto block) 3 Way 1/8' NPT Tee Fitting, for hose from block and 2 sensors. Note: This kit does not come with sensors – the factory low pressure switch can NOT be used. An aftermarket 1/8″ NPT low pressure switch can be used with the factory wire.

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BMW M50 M52 Head Gasket - .080

T#:26505005

Part#: C4328-080

In Stock at Vendor

$ 262.99 USD

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$ 262.99 USD

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BMW M50 M52 Head Gasket - .080 is designed to provide superior sealing performance for BMW engines. This high-quality MLS (Multi-Layer Steel) gasket from Cometic features three layers of stainless steel, ensuring exceptional strength and durability. Each outer layer is embossed and coated with Viton, a fluoroelastomer rubber-based material known for its resilience in harsh conditions. The Viton coating offers heat resistance up to 250°C (482°F), making it ideal for high-performance applications.

Superior Strength: Three layers of stainless steel provide robust sealing and durability.
Enhanced Heat Resistance: Viton coating withstands temperatures up to 250°C (482°F), ensuring reliable performance under extreme conditions.
Excellent Corrosion Resistance: Designed to resist corrosion and ensure long-term reliability.
Optimized Sealing: Embossed and coated layers effectively seal various surface textures and handle fluctuating loads.

The BMW M50 M52 Head Gasket - .080 from Turner Motorsport is engineered to meet the demands of high-performance BMW engines, offering enhanced reliability and durability.

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AAF Oil Pan Baffle - E9x M3

T#:7624656

Part#: 116184

Ships in 4 Business Days

$ 230.00 USD

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$ 230.00 USD

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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. This oil pan baffle by AAF keeps the oil at the pick up better than others on the market. Baffling the oil pan is extremely important. Under racing and track conditions, oil can move in the oil pan enough to cause extended moments of oil starvation. This can cause premature, and in some cases immediate, engine failure. The pan features a tight fit to keep oil from exiting under braking or cornering. A must have for all track cars. **Note: Requires Welding to install.

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M60 Cut Ring Head Gasket Set By Athena-SCE (Bore 90.6 Mm - 0.079") ...

T#:37149882

Part#: HG-CR-M60-906079

Ships in 4 Business Days

$ 399.99 USD

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$ 399.99 USD

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Turner Motorsport offers the M60 Cut Ring Head Gasket Set By Athena-SCE (Bore 90.6 Mm - 0.079"), providing BMW owners with a premium solution to boost engine reliability and performance.

AAF Jump Post Relocation Bracket - E46

T#:7608844

Part#: 11648

In Stock at Vendor

$ 28.99 USD

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$ 28.99 USD

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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. The AAF E46 Jump Post Relocation Bracket makes it easy to adjust camber/caster on your race car by getting the factory jump post out of the way! In race car applications, the desired camber and caster settings can cause the strut tops and shock adjusters to interfere with the factory jump post. This kit takes just a few minutes to install and makes using strut braces and adjusting camber plates just that much safer and faster.

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Oil Pump Upgrade Kit - M50/M52/S50/S52

T#:26204983

Part#: 5150-OPUK-M50

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$ 229.99 USD

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$ 229.99 USD

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The M50/M52/S50/S52 engines are notorious for their well-documented problems stemming from harmonics. The vibration leads to the oil pump shaft becoming weak, causing it to either break or the oil pump nut to loosen and fall off, resulting in an immediate loss of oil pressure. Worry no more! 5150 has the solution! At the core of this kit is a hardened Chromoly shaft, meticulously centerless ground to guarantee absolute precision. This shaft is designed with an exclusive square key lock system, which not only prevents the gear from ever rotating on the shaft but also reinforces the mounting area, adding additional strength. Furthermore, we replaced the problematic oil pump nut with an extended-length bolt, which is EDM drilled to accommodate safety wire for a secure fit in all conditions. Don't wait until your oil pump fails, leaving you facing expensive engine repairs! Key Features: Centerless ground shaft made from hardened Chromoly. Bolt with EDM drilling, including safety wire. Grade 8 extended-length hardware for secure gear attachment. Left-hand threaded to prevent unexpected loosening. Double-D keyed shaft and drive gear. Fully serviceable and rebuildable without the need for grinding.

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N55 Cometic Head Gasket - 0.052"

T#:31522946

Part#: C15476-052

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$ 194.99 USD

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$ 194.99 USD

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Cometic is the industry standard when upgrading the head gasket on your high performance BMW. These MLS (Metal Layered Steel) head gaskets are many enthusiasts’ choice when adding more boost or simply bulletproofing your current setup! Designed for high-performance applications, Cometic Head Gaskets are sure to stand up to the task!

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Performance Rod Bearing Kit - S54

Late Model: S54 Engines after 02/2003 production and later use M10 Bolts.

T#:26171618

Part#: 5150-HPRBK-S54-L

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$ 529.99 USD

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$ 529.99 USD

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Now one of 5150's best sellers has gotten even better! With a 5150 Autosports' complete High-Performance Rod Bearing Kit, you get all the parts you need to easily swap out the factory connecting rod bearing shells and bolts in one simple kit. 5150's S54 bearings are embraced by BMW engine builders worldwide. Popular for both forced induction and N/A builds, their coated bearings are "friction resistant" making thermal breakdowns that can occur due to lack of lubrication a much less common occurrence. Helping to prevent premature engine failures on street cars, and spun bearings under stress at the track when things are most critical. Proven by customers to help you finish the race even with loss of oil pressure! Kit includes: (1) Complete set of ARP S54 Connecting Rod Bolts (1) Complete set of 5150 High Performance Rod Bearing Set (1) ARP Assembly Lubricant packet Tech Notes: As with all bearings, please check your tolerances and size before installation. Due to the specialized tools needed, professional install recommended. There are no returns available on any engine bearings.

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CP Forged Piston Set BMW M20 B25 Std.

T#:26205089

Part#: CP-FPS-M20-B25

In Stock

$ 1,349.99

This product was last offered at the strikethrough price on
07-29-2026

$ 1,268.99 USD

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$ 1,349.99

This product was last offered at the strikethrough price on
07-29-2026

$ 1,268.99 USD

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CP-Carrillo represents the highest quality pistons on the market, engineered for maximum power and durability. Utilizing high-strength, lightweight materials and advanced engineering, this BMW M20B25 piston set features: Lightweight Design: CP-Carrillo pistons are made from high-strength, lightweight materials, such as forged aluminum alloy. Reduced piston weight contributes to improved engine responsiveness and acceleration. Advanced Engineering: CP-Carrillo engineers use state-of-the-art technology and engineering techniques to manufacture pistons that offer optimized combustion, improved fuel efficiency, and increased power output. CP-Carrillo pistons are the best choice for any M20 engine and application, from street bully to all-out track car, and are engineered by one of the most respected names in motorsport to improve performance and reliability. Piston Sets Include: - Pistons - Rings - Pins - Locks - Spec Sheet

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BMW M50 M52 S50 S52 Cut Ring Head Gasket

T#:45176130

Part#: ATH-CR330014

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$ 324.99 USD

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$ 324.99 USD

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N55 Cometic Head Gasket - 0.044"

T#:31522944

Part#: C15476-044

Back Ordered

$ 194.99

This product was last offered at the strikethrough price on
06-15-2026

$ 177.99 USD

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$ 194.99

This product was last offered at the strikethrough price on
06-15-2026

$ 177.99 USD

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Valve Guide Intake & Exhaust - Priced Each

T#:31125606

Part#: 260387040

In Stock at Vendor

$ 6.99 USD

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$ 6.99 USD

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Valve Guide Intake & Exhaust - Priced Each

T#:31092551

Part#: 260387010

In Stock

$ 6.99

This product was last offered at the strikethrough price on
07-15-2026

$ 5.99 USD

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$ 5.99 USD

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ARP Main Stud Kit - B58

T#:25241787

Part#: ARP-MSK-B58

Ships in 4 Business Days

$ 229.99 USD

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$ 229.99 USD

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This ARP Main Stud Kit is designed to replace BMW part numbers 11128644674 and 11127613127 for the B58; B58A, B58C, B58D engines found in varies BMW chassis One significant advantage of these main studs is their ability to prevent main cap walk, which can occur when the main caps shift or move out of position, potentially causing damage to the engine. In addition, ARP Main Studs can safeguard the threads of your engine block, providing an extra layer of protection against potential damage. When opting for main studs instead of factory bolts, it's important to note that the engine builder should mic the bores. Using studs may require a line hone to ensure proper fitment and alignment. A line hone is a machining process that can be used to resize and reshape the main bearing bores, ensuring that they are perfectly round and concentric. This is crucial for ensuring proper oil clearance and preventing premature bearing wear. By mic'ing the bores and performing a line hone if necessary, engine builders can ensure that the main studs are installed correctly and that the engine will perform reliably and at its best.

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Oversize Valve Guide - Priced Each

T#:593972

Part#: 11121735533

Ships in 3 Business Days

$ 7.99 USD

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$ 7.99 USD

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CP-Carrillo Connecting Rod Set M5X Pro-Xtreme

T#:26204921

Part#: CAR-CRS-S52-XT

Ships in 4 Business Days

$ 2,099.99 USD

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$ 2,099.99 USD

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The 5150 AutoSport Pro-Xtreme Connecting Rods, made by CP-Carrillo, are designed to handle extreme horsepower and high RPM applications for BMW M50 Non-VANOS, M52, S50, S52, and M54 engines with 135 mm Rods. Constructed from high-strength, aircraft-grade steel, these connecting rods are engineered to withstand the forces generated by high-powered engines. The Pro-Xtreme design is specifically tailored to handle up to 2000 horsepower, making these rods suitable for high-performance turbo/drag racing or street/strip applications. They are also designed to handle high engine speeds of up to 9500 RPM, which is necessary for achieving maximum power output. Each connecting rod is precisely fabricated to meet the demands of high-performance engines using advanced manufacturing techniques such as computer-aided design (CAD) and finite element analysis (FEA). The Pro-Xtreme Connecting Rods are designed to be durable, reliable, and capable of handling the extreme stresses and forces generated by high-horsepower and high-rpm engines. Please note that these 135 mm connecting rods are designed to fit M50 Non-VANOS, M52, M52TUB28, S50 U.S, S52 U.S, and M54B30 135mm Rod engines. They will NOT fit M50-VANOS engines, as they require 140 mm Rods.

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High Performance Main Bearing Set Std. - S58

T#:22427030

Part#: 5150-HPMBS-S58

Ships in 4 Business Days

$ 899.99 USD

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$ 899.99 USD

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5150 High Performance Coated Main Bearing Sets are made for the demands of high performance engine builds. Treated shells and coated by Calico to reduce friction, these bearings allow your engine to generate more power and resist "spinning" under stress. These coated bearings also have thermal resistant properties that not only perform in high HP applications like forced induction or race use, but also help prevent sudden engine failure in the event of oil pressure loss. 5150 bearings have proven themselves on and off the track, lasting longer and outperforming other bearings on the market! Note: There are no returns available on 5150 engine bearings.

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CP-Carrillo Connecting Rod Set - WMC Bolts

Will Not Work With OE Pistons

T#:25473971

Part#: B58-SCR13492

Ships in 4 Business Days

$ 1,844.99 USD

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$ 1,844.99 USD

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CP-Carrillo connecting rods are highly esteemed in both racing and street performance communities for their exceptional quality and reliability. Renowned for their premium craftsmanship, CP-Carrillo produces top-tier products trusted by winning racers worldwide. Each connecting rod is meticulously crafted of a chrome-moly based alloy, reducing mass compared to stock rods while maintaining unparalleled strength. These rods undergo rigorous quality control measures, ensuring tight tolerances and precise balancing. Sold as matched and balanced sets, they come equipped with high-quality WMC rod bolts. To clarify, these 148 mm connecting rods are specifically designed to fit BMW B58 engines. It's important to note that they are not compatible with factory OEM pistons.

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Upgrade your BMW 135i, 335i, X6, or Z4 with the Cometic 85.5mm Bore .052in MLX Head Gasket.

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