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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

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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 Connecting Rod Bolt Kit - E36 M3 S50/S52 (US only), E46 323/325 ...

T#:2210

Part#: 201-6201

Ships in 7 Business Days

$ 222.99

This product was last offered at the strikethrough price on
08-13-2026

$ 194.99 USD

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$ 194.99 USD

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Set of 12 ProSeries connecting rod bolts, made by ARP -- the world leader in fastener technology. Each bolt is made of ARP2000 material, which exceeds the strength of 8740 Chrome Moly, and is able to achieve clamp load at 220,000psi. ARP2000 fasteners are used widely in motorsport and drag racing as an upgrade from 8740 Chrome Moly in both steel and aluminum rods. These are simply the best connecting rod bolts available, making them ideal for ultra high performance, racing and forced induction applications.

This set replaces the factory BMW rod bolt number 11-24-1-739-728 (11241739728) which measures 44mm in length. The 44mm BMW rod bolt was used on all US spec E36 M3 (3.0 and 3.2 liter), 1999-2000 E46 323i/323Ci, 2001-2005 325i/325Ci, Z3 1.9,2.5 and 3.2, as well as Z4 2.5. It was also used on SOME of the M50 2.5 liter engines from 1992-1995 -- but check before ordering! Opened ARP bolt kits are not returnable. If your M50 2.5 liter engine has 53mm rod bolts, you will require kit part# 201-6301 instead.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.

These ARP connecting rod bolts fit the following BMWs:
1992-1995 E36 325i/is *** with 44mm rod bolts only ***
1995-1995 E36 M3 S50 3.0 liter (US model)
1996-1999 E36 M3 S52 3.2 liter (US model)
1999-2000 E46 323i & 323Ci (US)
2001-2005 E46 325i, 325xi & 325Ci (US)
1998-2002 Z3 2.3 / 2.5 liter
1998-2000 MZ3 M Roadster & M Coupe
2003-2005 Z4 2.5 liter
*** DOES NOT FIT E36 328 ****

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Cap Nut M6 - 11121738608 - E34,E36,E39,E46,E53,E83,E85

2X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!

T#:24145945

Part#: 11121738608

In Stock

$ 20.99 USD

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$ 20.99 USD

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Cap Nut - M6
This item fits the following BMW Chassis:
E36 M3,E34,E36,E39,E46,E53 X5 X5,E83 X3,E85 Z4

Fits BMW Engines including:
M50,M52,M54,M56,S50,S52

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Race German Cylinder Head Block Off Plates - M50/M52/S50/S52 ...

T#:6827891

Part#: RGCHBOM50

Ships in 2 Business Days

$ 71.99 USD

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$ 71.99 USD

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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. Race German's cylinder head block off plates are designed to fit perfectly in place on your M50/M52/S50/S52 engine. This eliminates the needs for using rags which could potentially still allow small debris into the ports or even get stuck and leave particles. These plates are designed to be 100% plug and play. Features: Exhaust Side Intake Side

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Race German Cylinder Head Block Off Plates - S54

T#:6827892

Part#: RGCHBOS54

Ships in 2 Business Days

$ 71.99 USD

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$ 71.99 USD

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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. Race German's cylinder head block off plates are designed to fit perfectly in place on your S54 engine. This eliminates the needs for using rags which could potentially still allow small debris into the ports or even get stuck and leave particles. These plates are designed to be 100% plug and play. Features: Exhaust Side Individual Throttle Body Caps (6)

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General Purpose Hose Clamp - Priced Each

2X Entries Into Our F80 M3 Sweepstakes

T#:592737

Part#: 07129952104

Ships in 4 Business Days

$ 6.99 USD

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$ 6.99 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

Rein General Purpose Fuel Hose Clamp - Single Use - (NO LONGER AVAILA...

2X Entries Into Our F80 M3 Sweepstakes

T#:31092540

Part#: 13311703387

Ships in 1-2 days

$ 2.99 USD

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$ 2.99 USD

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Rein Hose Clamp - 16.5 mm / 9 mm Width (Crimp Type) - 32416751128 - 1...

2X Entries Into Our F80 M3 Sweepstakes

T#:50934444

Part#: 32416751128

In Stock

$ 4.99 USD

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$ 4.99 USD

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M9 X 1.25 BMW 328 E46 Rod Bolt Kit

T#:54139644

Part#: 301-6022

Ships on Nov 30, 2026

20% off MSRP $ 19.99

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

$ 15.99 USD

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20% off MSRP

$ 19.99

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

$ 15.99 USD

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Engineered from proprietary ARP2000® alloy, these M9 x 1.25 fasteners provide the massive clamping force needed to keep the rod journals perfectly round and seated, even when bouncing off the rev limiter lap after lap.

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4MM Silicone Vacuum Hose - Black - 9 Feet

T#:370919

Part#: VC04B

In Stock

Sale - Save 15% $ 14.99

This product was last offered at the strikethrough price on
11-08-2026

$ 12.71 USD

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Sale - Save 15%

$ 14.99

This product was last offered at the strikethrough price on
11-08-2026

$ 12.71 USD

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Car suffering from vacuum leaks? This vacuum hose has a 4mm inner diameter.

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