BMW Internal Engine Parts for BMW 3 Series E46 (1999-2005)

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

T#:26171655

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

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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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S5X/M5X/M44/M20/M10- WPC Treated Rod Bearing Set - (Standard/Red Shel...

10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

T#:395066

Part#: 11241284849WPC

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Sale - Save 25% $ 188.99

This product was last offered at the strikethrough price on
11-07-2026

$ 141.74 USD

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$ 188.99

This product was last offered at the strikethrough price on
11-07-2026

$ 141.74 USD

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These WPC-treated bearings are the best we have seen! WPC is a shot-peening treatment at a microscopic level. It's perfect for sensitive surfaces like bearings. The WPC treatment removes imperfections and high spots, while creating a surface that retains oil better than the original surface. This greatly reduces friction. The bearings in this kit are original equipment KS bearings that are sent to WPC for treatment. The treated bearings are stronger with less metal fatigue and less friction than buying off-the-shelf bearings from the dealer.

This item fits the following BMWs:
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1982-1988 E28 BMW 528e
1989-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe
2003-2005 Z4 BMW Z4 2.5i Z4 3.0i

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Ferrea Performance Intake Valve - Stock Size

T#:583445

Part#: F1550P

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$ 34.99

This product was last offered at the strikethrough price on
11-04-2026

$ 31.99 USD

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$ 31.99 USD

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S54/S5X/M5X/M20/M44 WPC Treated BMW Engine Crankshaft Main Bearing Se...

10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

T#:585720

Part#: 11211706847WPCKT

In Stock

Sale - Save 5% $ 250.99

This product was last offered at the strikethrough price on
11-07-2026

$ 238.44 USD

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$ 250.99

This product was last offered at the strikethrough price on
11-07-2026

$ 238.44 USD

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What's better than using new crank bearings in your next engine build? WPC-treated bearings! What is WPC, you ask? WPC is a surface treatment that reduces friction and adds strength - two improvements that benefit internal engine components. Ultra-fine particles are fired at the surface at very high speeds, like shot-peening - but much, much smaller. The parts come out smoother and stronger due to thermal discharge. The two largest enemies of any high-performance engine are heat and friction - and WPC has found a way to reduce both. What are you waiting for? Use WPC-treated bearings on your next engine build or crank service!

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Ferrea Performance Exhaust Valve - Stock Size

T#:583444

Part#: F1552P

Ships on Dec 1, 2026

$ 34.99

This product was last offered at the strikethrough price on
11-04-2026

$ 31.99 USD

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Performance Rod Bearing Kit - S54

Early Model S54 Engines up to 02/2003 production date

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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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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Performance Main Bearing Set - S54

T#:26171616

Part#: 5150-HPMBS-S54

Ships in 4 Business Days

$ 343.99 USD

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$ 343.99 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 M54 Main Bearing Performance Set

T#:26171610

Part#: 5150-HPMBS-M54

Ships in 4 Business Days

$ 343.99 USD

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$ 343.99 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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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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Performance Rod Bearing Kit - S54

For Late Model S54 Engines after 02/2003 production

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-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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Performance Rod Bearing Set - M54

T#:26171611

Part#: 5150-HPRBS-M54

Ships in 4 Business Days

$ 251.99 USD

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$ 251.99 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.

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CP-Carrillo Connecting Rod Set - S54

Upgrade Your Connecting Rods in Your High Horsepower S54!

T#:26171622

Part#: CAR-S54-SCR

Ships in 3 Business Days

Starting at $ 2,149.99 USD

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Starting at $ 2,149.99 USD

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CP-Carrillo's connecting rods for the BMW S54 engine are specifically engineered to serve as direct replacements for BMW part numbers #11247834437, #11247831924, #11247834310, and 11247831331 in the BMW S54B30, S54B32, S54B33, S54B34, and S54B35 engines, with a length of 139 mm. These Carrillo connecting rods boast a range of impressive features: Crafted from a special chrome-moly based alloy, ensuring strong and durable forged rods. Their lightweight design significantly reduces mass compared to standard rods, optimizing engine performance. These rods have demonstrated exceptional strength and performance in racing environments, vouching for their reliability. Carrillo maintains stringent quality control measures, resulting in tight tolerances and precision balancing for superior performance. Each set is meticulously matched and balanced, ensuring consistent and smooth operation. The connecting rods come equipped with high-quality, non-stretch WMC rod bolts, guaranteeing stability under high-stress conditions. For those seeking even higher performance, there is an option to upgrade to CARR bolts. In conclusion, Carrillo connecting rods stand as the top choice for racers who demand the utmost in performance and reliability from their engines. With a track record of excellence and a suite of advanced features, these rods are the epitome of quality and precision for high-performance applications.

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5150 AutoSport High Performance Rod Bearing Set - N54

T#:38419052

Part#: 5151-HPRBS-S54

Ships in 4 Business Days

$ 399.99 USD

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$ 399.99 USD

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Upgrade your BMW S54 engine with the 5150 AutoSport High Performance Rod Bearing Set—a premium solution designed to improve durability, reliability, and longevity. This high-performance bearing set addresses the well-known rod bearing wear issues found in the E46 M3, Z3M, and Z4M engines, offering superior materials and precision engineering for high-RPM and high-load applications. Product Features: Advanced Materials – Manufactured from tri-metal or bi-metal alloys, these bearings provide superior wear resistance and strength under extreme conditions. Optimized Oil Clearance – Precision tolerances ensure proper oil flow and lubrication for maximum engine performance. Proven Durability – Built for motorsport, high-performance street use, and endurance applications, ensuring long-lasting reliability. OEM Replacement – Designed to fit factory specifications for an easy, direct installation with no modifications needed. Prevention of Bearing Failure – Helps mitigate the risk of premature rod bearing failure, a common issue in the S54 engine. For optimal performance, we recommend pairing these bearings with ARP rod bolts and an upgraded oil pump to further enhance engine protection and longevity.

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CP-Carrillo Connecting Rod Set - S54 Pro-Xtreme

T#:26204927

Part#: CAR-CRS-S54-XT

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$ 2,299.99 USD

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$ 2,299.99 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 S54 engines with 139 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.

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CP-Carrillo Forged Piston Set - M54B28 Std. Size

For Vehicles With M54B25 Engine Only

T#:26071892

Part#: M54B25-CPP-84

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Starting at $ 2,206.98 USD

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Starting at $ 2,206.98 USD

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CP-Carrillo sets the benchmark for premium aftermarket forged pistons. Crafted with high-strength, lightweight materials and cutting-edge engineering, this BMW M54B25 piston set boasts the following features: Lightweight Design: Constructed from forged aluminum alloy, CP-Carrillo pistons offer reduced weight, enhancing engine responsiveness and acceleration for a dynamic driving experience. Advanced Engineering: Leveraging state-of-the-art technology, CP-Carrillo engineers optimize combustion, fuel efficiency, and power output, ensuring peak performance in every application. Wide Configuration Range: With a variety of bore sizes and compression ratios available, CP-Carrillo provides options to tailor pistons to specific engine builds and performance objectives. Quality Construction: Each CP-Carrillo piston undergoes precision machining and rigorous testing to meet exacting standards, guaranteeing consistent quality and performance in every set. Engineered by one of motorsport's most respected names, CP-Carrillo pistons are the ultimate choice for the M54B25 engine, whether for street performance or track dominance. Piston Sets Include: Pistons Rings Pins Locks Spec Sheet Optional Extras: Skirt Coating - Adding a Protective Layer Between the Sides of the Piston and Cylinder Walls Dome Coating - Adding a Protective Layer to the Top of The Piston HD-Wrist Pins - A Must if You are Planning on Going Beyond 850 HP! X Forging - Reducing Rotational Mass By Moving the Wristpin Inwards and Shortening it While Increasing Overall Strength Please Note: It is essential to have all engine modifications performed by a qualified professional to ensure proper installation and optimal engine performance, safety, and reliability.

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CP-Carrillo Pro-Xtreme Forged Piston Set Std. Size - S54

T#:26171645

Part#: CP-FPS-S54-XT

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Starting at $ 2,268.98 USD

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Starting at $ 2,268.98 USD

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CP-Carrillo sets the benchmark for premium aftermarket forged pistons. Crafted with high-strength, lightweight materials and cutting-edge engineering, this BMW S54 piston set boasts the following features: Lightweight Design: Constructed from forged aluminum alloy, CP-Carrillo pistons offer reduced weight, enhancing engine responsiveness and acceleration for a dynamic driving experience. Advanced Engineering: Leveraging state-of-the-art technology, CP-Carrillo engineers optimize combustion, fuel efficiency, and power output, ensuring peak performance in every application. Wide Configuration Range: With a variety of bore sizes and compression ratios available, CP-Carrillo provides options to tailor pistons to specific engine builds and performance objectives. Quality Construction: Each CP-Carrillo piston undergoes precision machining and rigorous testing to meet exacting standards, guaranteeing consistent quality and performance in every set. Engineered by one of motorsport's most respected names, CP-Carrillo pistons are the ultimate choice for the S54 engine, whether for street performance or track dominance. Piston Sets Include: Pistons Rings Pins Locks Spec Sheet Optional Extras: Skirt Coating - Adding a Protective Layer Between the Sides of the Piston and Cylinder Walls Dome Coating - Adding a Protective Layer to the Top of The Piston HD-Wrist Pins - A Must if You are Planning on Going Beyond 850 HP! X Forging - Reducing Rotational Mass By Moving the Wristpin Inwards and Shortening it While Increasing Overall Strength Please Note: It is essential to have all engine modifications performed by a qualified professional to ensure proper installation and optimal engine performance, safety, and reliability.

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BMW Internal Engine Parts for BMW 3 Series E46 (1999-2005)

Sub-Categories

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

S5X/M5X/M44/M20/M10- WPC Treated Rod Bearing Set - (Standard/Red Shel...

Ferrea Performance Intake Valve - Stock Size

S54/S5X/M5X/M20/M44 WPC Treated BMW Engine Crankshaft Main Bearing Se...

Ferrea Performance Exhaust Valve - Stock Size

Performance Rod Bearing Kit - S54

Performance Rod Bearing Set - M5X

Performance Main Bearing Set - S54

BMW M54 Main Bearing Performance Set

Performance M5X Main Bearing Set

Performance Rod Bearing Kit - S54

CP-Carrillo Connecting Rod Set M5X Pro-Xtreme

Performance Rod Bearing Set - M54

CP-Carrillo Connecting Rod Set - S54

5150 AutoSport High Performance Rod Bearing Set - N54

CP-Carrillo Connecting Rod Set - S54 Pro-Xtreme

CP-Carrillo Forged Piston Set - M54B28 Std. Size

CP-Carrillo Pro-Xtreme Forged Piston Set Std. Size - S54

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