Engine Hardware for BMW 3 Series E46 (1999-2005)

Clear BMW chassis

Most engine hardware including head studs, VANOS bolts, and exhaust studs can only be used once. While most of the accessory bolts and miscellaneous hardware can be re-used it is often handy to have a spare bolt or bracket just in case one breaks. Any aluminum bolt, such as those found in the N52 engine MUST be replaced no matter the age or visual condition.

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

T#:26171655

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

Ships in 7 Business Days

$ 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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Mini Screw Clamp

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

T#:367185

Part#: 21014

In Stock

$ 3.99 USD

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$ 3.99 USD

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Ideal for low pressure hoses. This hose clamp could be used on many vehicles for many different purposes.

Zinc-Plated Steel M8 Washer - Priced Each

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

T#:28171519

Part#: 91166A270-100

In Stock

Sale - Save 50% $ 1.99

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

$ 0.99 USD

Limited Qty Sale

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Qty

Sale - Save 50%

$ 1.99

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

$ 0.99 USD

Limited Qty Sale

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For M8 Screw Size, 8.4 mm ID, 16 mm OD

Locking Hex Nut - M6 - Priced Each

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

T#:22558959

Part#: 94235A080

In Stock

$ 1.53 USD

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$ 1.53 USD

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BMW | Screw

T#:57231520

Part#: 07119901299

In Stock

$ 2.99 USD

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$ 2.99 USD

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M8x16

Sheet Metal Nut - Set Of 5

T#:57543712

Part#: 07129904150

Ships in 6 Business Days

$ 5.99 USD

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$ 5.99 USD

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This Febi Bilstein 5-piece fastener set offers genuine OEM-level durability and precision tolerance to ensure your vehicle stays tightly bolted together.

C-Clip Nut

T#:55821709

Part#: 51127070202

Special Order: No Guaranteed ETA

$ 1.99 USD

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$ 1.99 USD

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This Febi-manufactured M6 C-Clip Nut is the exact direct-replacement fastener needed to keep your BMW or MINI's bodywork properly secured.

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Engine Hardware for BMW 3 Series E46 (1999-2005)

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

Mini Screw Clamp

Zinc-Plated Steel M8 Washer - Priced Each

Locking Hex Nut - M6 - Priced Each

BMW | Screw

Sheet Metal Nut - Set Of 5

C-Clip Nut

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