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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Cylinder Head Bolt Kit

2X Entries Into Our F80 M3 Sweepstakes

T#:582581

Part#: 11121721938

In Stock

$ 29.99

This product was last offered at the strikethrough price on
07-23-2026

$ 21.99 USD

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$ 21.99 USD

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Elring Cylinder Head Bolt Set - E39, E46, E53

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T#:377047

Part#: 11121740065

In Stock

$ 43.56

This product was last offered at the strikethrough price on
08-12-2026

$ 34.99 USD

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$ 34.99 USD

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Includes all head bolts in one cylinder head

OEM Elring Cylinder Head Bolt Set - E30 E34 M20 2.5L 2.7L

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T#:2706174

Part#: 11121726478

In Stock

$ 37.99

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

$ 25.99 USD

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$ 25.99 USD

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Brand new set of cylinder head bolts - the cylinder head bolts need to be replaced after removal, once a bolt is torqued down you're unable to reuse it.

Elring Cylinder Head Bolt Set

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T#:377135

Part#: 11127548799

Ships in 1 Business Day

$ 46.99 USD

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$ 46.99 USD

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Head bolts are one time use, and under no circumstance should be reused. Head bolts stretch when torqued, and do not return to a non-stretched state.

Cylinder Head Bolts - Set Of 13

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T#:591559

Part#: 11127560274

In Stock

$ 32.99

This product was last offered at the strikethrough price on
06-22-2026

$ 32.85 USD

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$ 32.85 USD

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Cylinder Head Bolt Set for Engine Maintenance

When it comes to replacing a head gasket or performing internal engine work, this cylinder head bolt set is a must-have for your project. Ensuring a proper seal and assembly, these bolts are essential for refitting the cylinder head to the engine block. Keep in mind that the old bolts are not reusable, so you'll need this new set for a reliable repair. Additionally, depending on your requirements, you may need a new head gasket with either standard or plus thickness for machined heads. The set includes the following bolts:

10 M10x145 head bolts
2 M8x95 bolts
1 M8x35 bolt

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OEM Elring Cylinder Head Bolt Set - N20/26 2.0L

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T#:2602240

Part#: 11122212157

In Stock

$ 75.99

This product was last offered at the strikethrough price on
05-07-2026

$ 47.99 USD

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$ 47.99 USD

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If you remove your cylinder head replacement head bolts are a must. These bolts are designed to be torqued down and not reused.

OEM Elring Cylinder Head Bolt Set - F8X M2 Comp M3 M4 S55 3.0L ...

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T#:2706168

Part#: 11127853937

In Stock

$ 86.99

This product was last offered at the strikethrough price on
05-07-2026

$ 83.99 USD

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$ 83.99 USD

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If you remove your cylinder head replacement head bolts are a must. These bolts are designed to be torqued down and not reused.

ARP Head Stud Kit - BMW N55/S55

T#:23416542

Part#: ARP-HSK-S56-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+

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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Elring Cylinder Head Bolt Set - E53 E60 E63 E64 E65 E66 E70

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T#:596415

Part#: 11127583113

Ships in 1 Business Day

$ 73.99

This product was last offered at the strikethrough price on
05-07-2026

$ 70.99 USD

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$ 70.99 USD

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BMW Cylinder Head Bolt Set

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T#:15247118

Part#: 11127838831

Ships in 1 Business Day

$ 60.99

This product was last offered at the strikethrough price on
05-08-2026

$ 54.99 USD

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$ 54.99 USD

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When replacing a head gasket or performing maintenance that requires the removal of the head, it is advised to replace the cylinder head bolts as they are torque to yield bolts that allow for one time use only.

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T#:15412447

Part#: 11121729246

Ships in 1 Business Day

$ 36.99

This product was last offered at the strikethrough price on
05-08-2026

$ 35.99 USD

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$ 35.99 USD

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The cylinder head bolt is a torque-to-yield bolt, meaning the bolts stretch to ensure proper securing when tightened down. After removal, the bolts cannot return to their pre-stretched state and must be replaced for proper torque. This is a full set and includes 10 cylinder head bolts.

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BMW Cylinder head bolt set

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T#:45483601

Part#: 802.700

Special Order: No Guaranteed ETA

$ 42.99 USD

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$ 42.99 USD

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BMW Cylinder Head Bolt - Priced Each - M10 1.8L - Partnumber 11120621144

T#:27171911

Part#: 11128644674

Back Ordered

$ 85.99 USD

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$ 85.99 USD

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Features robust steel construction engineered to handle the high heat and extreme cylinder pressures of turbocharged applications.

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

Cylinder Head Bolt Kit

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OEM Elring Cylinder Head Bolt Set - N20/26 2.0L

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