Cylinder Head

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

T#:26171655

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

Ships on Nov 23, 2026

$ 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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ARP Head Stud Kit - N54

T#:24112781

Part#: ARP-HSK-N54-S

Back Ordered

$ 499.99 USD

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$ 499.99 USD

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ARP ARP2000 Head Stud Kit - N55

T#:42335661

Part#: ARP-HSK-N55-S

Ships in 1-2 days

$ 743.99 USD

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$ 743.99 USD

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Enhance your BMW N55 engine's ability to handle higher levels of boost with 5150's custom-designed Head Stud Kit from ARP, the global leader in fastener technology!

ARP Head Stud Kit B48 Undercut CA625+, 12pt

T#:48367044

Part#: 401-4704

Ships on Oct 29, 2026

$ 588.99 USD

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$ 588.99 USD

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Ferrea High Performance Valve Spring Kit for BMW N55/S55

T#:23416526

Part#: FER-HPVSK-N55

Ships in 3 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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ARP Head Stud Kit - N63

T#:26238387

Part#: ARP-HSK-N63

Ships in 3 Business Days

Starting at $ 749.99 USD

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Starting at $ 749.99 USD

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Upgrade the performance of your BMW N63 engine with our ARP Head Stud Kits, specifically designed for the turbocharged V-8 N63 engine. 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. Our ARP Head Studs are designed to be stronger than factory bolts, ensuring your race engine stays together even under extreme conditions. Our Custom Age 625+ kit is made from a material with a tensile strength of 260 ksi, substantially higher than the 190 ksi of the ARP 2000 head stud. It's an ideal choice for individuals who want to push the limits of their N63 builds.

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BMW N55 S55 Ferrea High Performance Valve Kit

T#:23416508

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

Ships in 3 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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BMW S58 3.0L ARP Head Stud Kit - CA625+

T#:22427036

Part#: ARP-HSK-S58-CA

Ships in 3 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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HEAD STUD KIT - BMW S85

T#:20089537

Part#: ARP-HSK-S85

Ships in 5 Business Days

$ 579.99 USD

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$ 579.99 USD

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ARP Cylinder Head Stud Kit - Custom Age 625+ - BMW S63 4.4L

T#:51110152

Part#: 201-4703

Ships in 7 Business Days

$ 1,099.99 USD

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$ 1,099.99 USD

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For engine builders pushing the absolute limits of high-performance engineering, the ARP Custom Age 625+ Cylinder Head Stud Kit represents the pinnacle of fastening technology. While standard aircraft-quality steels and even the renowned ARP2000 alloy are impressive, the proprietary Custom Age 625+ super-alloy provides a massive leap in capability by increasing tensile strength by an additional 40,000 to 60,000 psi. This specialized hardware is engineered specifically for ultra-high-boost applications, offering superior fatigue resistance and the unique ability to maintain its structural integrity under extreme temperatures that would cause lesser materials to weaken.

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OEM INA Hydraulic Lifter - BMW M5X S5X M62 S62

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T#:360996

Part#: 11321748884

In Stock

$ 19.99 USD

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$ 19.99 USD

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Stock replacement hydraulic valve lifter for the M52, M54 and S50 S52 engines. These lifter buckets can last 150,000+ miles but then they no longer fit on the valve stem correctly and a ticking or knocking noise can result. If the lifter is no longer seated correctly, it can lead to the valve not opening correctly. Replacement is straight-forward but requires special tools for working with the camshafts. This item fits the following BMWs:
1995-1998 E36 BMW 323is 323ic 328i 328is 328ic M3
1997-2003 E39 BMW 525i 528i 530i M5
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
2004-2005 E60 BMW 525i 530i
2004-2005 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
1996-2002 E36/7 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1998-2000 E36/7 BMW M Roadster M Coupe

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OEM Ina Intake Hydraulic Tappet - BMW N52 N54 N55 N20 S55

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T#:591661

Part#: 11337548690

In Stock

$ 15.99 USD

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$ 15.99 USD

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Hydraulic valve lifter

Ina Hydraulic Valve Lifter - E60 E61 E82 E88 E90 E91 E92 E93 F10 Z4 E...

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T#:596290

Part#: 11337605330

In Stock

$ 9.99 USD

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$ 9.99 USD

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If your BMW has noisy or stuck lifters, replace them to improve performance and stop the annoying chatter

OEM INA Rocker Arm - BMW N20 2.0L, N52 N54 3.0L

T#:41492602

Part#: 11337559797

In Stock

$ 22.99 USD

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$ 22.99 USD

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Rocker arms work in conjunction with your camshafts and valves, applying pressure from the camshaft to open and close your intake and exhaust valves. If your rocker arm rollers have failed, this can lead to extreme camshaft damage, requiring the camshaft to be replaced. Replace your rockers whenever servicing your camshafts or replacing your hydraulic lifters to ensure long-term engine reliability.

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ARP Head Stud Kit - S63

T#:26238368

Part#: ARP-HSK-S63

Ships in 3 Business Days

Starting at $ 749.99 USD

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Starting at $ 749.99 USD

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With 5150's ARP head stud kit, you can securely tune up the boost on your BMW S63 engine without worrying about the cylinder heads lifting. Specifically designed for the turbocharged V-8 S63 engines found in high-performance models such as F10 M5, F90 M5, F12 M6, F95 X5M, F96 X6M and F13 M6. 201-4702, 201-4703. 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. Our ARP Head Studs are designed to be stronger than factory bolts, ensuring your race engine stays together even under extreme conditions. Our Custom Age 625+ kit is made from a material with a tensile strength of 260 ksi, substantially higher than the 190 ksi of the ARP 2000 head stud. It's an ideal choice for individuals who want to push the limits of their S63 builds. ARP S63 Head Stud Kit for: M5 F10 2011-2016 M5 F90 2017 M6 F13 2011-2018 X5M F95 2013-2018 X6M F96 2014-2019 ARP2000 Step 1: Tighten to 30 ft-lbs. Step 2: Tighten to 60 ft-lbs. Step 3: Tighten to 90 ft-lbs. Custom Age 625+ Step 1: Tighten to 30 ft-lbs. Step 2: Tighten to 60 ft-lbs. Step 3: Tighten to 110 ft-lbs.

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Pro Series Head Bolts W10 W11 1.6L Engine

T#:26404879

Part#: 206-3601

Ships in 2 Business Days

$ 131.99 USD

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$ 131.99 USD

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Enhance the performance of your Mini with ARP's Pro series cylinder head bolts. These bolts are cold-forged for maximum molecular integrity and heat-treated to withstand extreme pressure, rated at 190,000 psi. Featuring 12-point heads, each kit includes hardened parallel washers for precise torque readings and even load distribution.

Cold-forged for maximum molecular integrity
Heat-treated to withstand extreme pressure
Rated at 190,000 psi for exceptional strength
12-point heads for easy installation
Includes hardened parallel washers for precise torque readings

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Ferrea High Performance Valve Spring Kit - S58

T#:22427042

Part#: FER-HPVSK-S58

Ships in 3 Business Days

$ 1,099.99 USD

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$ 1,099.99 USD

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Discover the Ferrea Valve Spring Kit for BMW S58 Engines Key Features: Premium Construction: Crafted from premium chrome-silicon steel wire, ensuring precise valve control at high engine speeds. Lightweight Durability: Titanium retainers enhance engine speed and reduce the risk of valve float. Engine-Specific Design: Spring seats are expertly tailored for your specific engine application, providing optimal support for the valve springs. Please note that while this kit is ideal for high-performance racing scenarios, its installation should be handled by experienced professionals to ensure proper operation. Seek expert guidance for a seamless installation and optimal performance.

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Canyon Engine Valve Guide - E10

T#:19505

Part#: 11121266760

Ships in 1 Business Day

$ 7.99 USD

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$ 7.99 USD

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VALVE GUIDE 11121266760 Manufactured by Canyon Engine

This item fits the following BMWs:
BMW 1600, 2002, 2002tii
BMW 3 Series - 318i, 320/6, 320i, 323i

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Athena Cut Ring Head Gasket S14

T#:28537477

Part#: ATH-HG-CR-S14-95

Ships in 3 Business Days

$ 284.99 USD

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$ 284.99 USD

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This Athena Cut Ring Head Gasket is specifically engineered to replace BMW part 11121316714 for the S14B20, S14B23, S14B25, S14B27 engines found in the E30 M3. Factory OEM & MLS head gaskets are only engineered to handle a limited amount of cylinder pressures before they start to leak, causing a range of issues, including engine overheating, loss of power, misfires, and in severe cases, catastrophic engine failure. Athena-SCE Cut Ring Head Gaskets are uniquely designed to handle increased cylinder pressure caused by power modifications, making them the recommended choice for applications making 16+ psi. Design: 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.

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Ferrea High Performance Oversized Valve Kit - S58

T#:22427041

Part#: FER-HPVK-S58+

Ships in 3 Business Days

$ 999.99 USD

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$ 999.99 USD

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Elevate the performance of your S58 engine with Ferrea's valve kit. Renowned for their unmatched reliability and durability in extreme conditions. Crafted from aerospace-grade alloys, including the robust EV8-Z18, these valves undergo a meticulous two-step slow forging process to ensure optimal grain flow and minimize material structure damage. Maintaining molecular integrity is paramount, achieved through a rigorous 48-hour heat treatment and stress-relieving process. The valves boast avionics-quality hard chrome and a specially applied hard tip for enhanced performance. Featuring a standard size of 30.1mm for intake and 28.5mm for exhaust, their triple groove design ensures top-notch efficiency. Note that these valves require additional machining due to their overall larger diameter. The kit includes: 12x Intake Valves 12x Exhaust Valves Designed to seamlessly work with factory valve locks, Ferrea's valves are tailored to elevate your BMW S58 engine's performance to new heights.

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Canyon Engine Standard Valve Guide - E23, E24, E28

T#:376784

Part#: 11121263642

Ships in 1 Business Day

$ 7.59 USD

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$ 7.59 USD

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Frequent cause of oil consumption in high-mileage engines

ARP Head Stud Kit, BMW S14

T#:28537451

Part#: ARP-HSK-S14

Ships in 3 Business Days

$ 179.99 USD

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$ 179.99 USD

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This ARP head stud Kit is designed for the BMW S14 B20, S14B23, S14B25, S14B27 engines found in the E30 M3. Installing ARP head studs can provide several benefits, including increased clamping force, improved head gasket sealing, and greater overall engine strength. This is especially important in high-performance and racing applications where the engine is subjected to increased stress and higher temperatures. Before installing ARP head studs, it is important to properly clean and prepare the engine block and cylinder head mating surfaces. It is also recommended to use ARP Ultra-Torque Fastener Assembly Lubricant during installation to ensure proper torque and clamping force. Instructions: 1. To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if necessary with ARP Thread Chaser. 2. Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages, plus proper fit, length and dimension. 3. If the cylinder head studs protrude into a water jacket, lubricate the block threads of the studs with ARP THREAD SEALER. 4. Screw studs into the block “HAND TIGHT ONLY”. 5. Install the cylinder head(s) and check for binding or misalignment. 6. Lubricate the stud threads, nuts and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight. ARP recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil or other low quality lubricants are used.

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ARP Head Stud Kit B48

T#:48367046

Part#: 201-4704

In Stock at Vendor

$ 263.99 USD

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$ 263.99 USD

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SuperTech High Performance Valve Spring Kit 75lbs - S58

T#:22427032

Part#: SUP-HPVSK-S58-75

Ships in 3 Business Days

$ 999.99 USD

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$ 999.99 USD

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Upgrade your BMW S58 with Supertech's specialized valve spring kits, designed for enhanced control and reliability. Engineered for high-performance demands, these kits are favored by enthusiasts, engine builders, and race teams alike. Crafted from premium materials, the springs offer superior rates, improved valve control, and enhanced durability compared to stock alternatives. Tailored to specific BMW engine configurations, Supertech kits ensure proper valve operation, preventing float and maximizing power output without compromising reliability.

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Ferrea High Performance Valve Kit - S58

T#:22427040

Part#: FER-HPVK-S58

Ships in 3 Business Days

$ 999.99 USD

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$ 999.99 USD

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SuperTech High Performance Valve Kit - S58

T#:22427038

Part#: SUP-HPVK-S58

Ships in 3 Business Days

$ 1,099.99 USD

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$ 1,099.99 USD

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SuperTech High Performance Valve Spring Kit 84 Lbs - S58

T#:22427033

Part#: SUP-HPVSK-S58-84

Ships in 3 Business Days

$ 999.99 USD

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$ 999.99 USD

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Upgrade your BMW S58 with Supertech's specialized valve spring kits, designed for enhanced control and reliability. Engineered for high-performance demands, these kits are favored by enthusiasts, engine builders, and race teams alike. Crafted from premium materials, the springs offer superior rates, improved valve control, and enhanced durability compared to stock alternatives. Tailored to specific BMW engine configurations, Supertech kits ensure proper valve operation, preventing float and maximizing power output without compromising reliability.

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SuperTech High Performance Oversized Valve Kit - S58

T#:22427039

Part#: SUP-HPVK-S58+

Ships in 3 Business Days

$ 1,099.99 USD

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$ 1,099.99 USD

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Elevate the performance of your S58 engine with Supertech's oversized valve kit, celebrated for its unmatched reliability and durability even in the most trying conditions. Boasting a size of 31.1mm for intake and 29.5mm for exhaust, their triple groove design ensures unparalleled efficiency. It's worth noting that these valves, being larger in diameter, necessitate additional machining. Included in this kit: 12x Intake Valves 12x Exhaust Valves

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BMW N55/S55 Valves By Super Tech

T#:39329323

Part#: SUP-HPVK-S55-32/

Ships in 3 Business Days

$ 1,143.99 USD

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$ 1,143.99 USD

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ARP Cylinder Head Stud Kit - ARP2000 - BMW S58 3.0L

T#:51110148

Part#: 201-4705

In Stock at Vendor

20% off MSRP $ 467.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 373.99 USD

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20% off MSRP

$ 467.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 373.99 USD

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For engine builders crafting a high-performance powerhouse, the ARP Cylinder Head Stud Kit is the industry-standard choice for reliability and strength. Each kit features studs, nuts, and washers manufactured from ARP’s proprietary ARP2000 alloy, a material rated far superior to standard aircraft-quality steels.

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