Cylinder Head

WPC Treated Cam Bearing Ledge - Intake

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T#:13299338

Part#: 11127550913WPC2

In Stock

Sale - Save 10% $ 916.99

This product was last offered at the strikethrough price on
06-14-2026

$ 825.29 USD

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Sale - Save 10%

$ 916.99

This product was last offered at the strikethrough price on
06-14-2026

$ 825.29 USD

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

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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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Ferrea High Performance Valve Spring Kit for BMW N55/S55

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T#:23416526

Part#: FER-HPVSK-N55

Ships in 1-2 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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BMW S58 3.0L ARP Head Stud Kit - CA625+

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T#:22427036

Part#: ARP-HSK-S58-CA

Ships in 3 Business Days

$ 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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BMW N55 S55 Ferrea High Performance Valve Kit

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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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ARP Head Stud Kit - BMW N55/S55

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T#:23416542

Part#: ARP-HSK-S56-CA

Ships in 3 Business Days

$ 999.99 USD

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Ferrea High Performance Oversized Valve Kit - S58

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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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Athena Cut Ring Head Gasket S14

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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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Canyon Engine Valve Guide - E10

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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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Ferrea High Performance Valve Spring Kit - S58

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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 Standard Valve Guide - E23, E24, E28

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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

SuperTech High Performance Valve Spring Kit 84 Lbs - S58

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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 Valve Spring Kit 75lbs - S58

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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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SuperTech High Performance Valve Kit - S58

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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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Ferrea High Performance Valve Kit - S58

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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 Oversized Valve Kit - S58

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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

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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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Sub-Categories

WPC Treated Cam Bearing Ledge - Intake

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

Ferrea High Performance Valve Spring Kit for BMW N55/S55

BMW S58 3.0L ARP Head Stud Kit - CA625+

BMW N55 S55 Ferrea High Performance Valve Kit

ARP Head Stud Kit - BMW N55/S55

Ferrea High Performance Oversized Valve Kit - S58

Athena Cut Ring Head Gasket S14

Canyon Engine Valve Guide - E10

Ferrea High Performance Valve Spring Kit - S58

Canyon Engine Standard Valve Guide - E23, E24, E28

SuperTech High Performance Valve Spring Kit 84 Lbs - S58

SuperTech High Performance Valve Spring Kit 75lbs - S58

SuperTech High Performance Valve Kit - S58

Ferrea High Performance Valve Kit - S58

SuperTech High Performance Oversized Valve Kit - S58

BMW N55/S55 Valves By Super Tech

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