BMW Internal Engine Parts for BMW 3 Series E46 (1999-2005)

Clear BMW chassis

Rebuilding your engine or giving your cylinder head an overhaul? Internal engine components covers parts that are located within the engine block and cylinder head. Examples include: timing chains and tensioners, rocker arms, rod bolts and studs, head bolts, valve springs, connecting rods, and more. These are Genuine BMW engine parts, performance upgrades, or approved aftermarket brands that have a long track record of reliability and quality.

Sub-Categories

Sort By:

Bav Auto Crankshaft Pulley Holding Tool

For Dual-VANOS "TU" Engines Only

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

T#:580404

Part#: B8800094

Ships on Jan 29, 2027

Sale - Save 10% $ 184.99

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

$ 166.49 USD

Add to Wish List

Qty

Sale - Save 10%

$ 184.99

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

$ 166.49 USD

Add to Wish List

Bav Auto's Crankshaft Pulley Holding Tool enables you to remove your crankshaft nut/bolt with ease - we recommend this tool if you intend on replacing timing chains, oil pump chains, leaking crankshaft seals, etc.

Show More Show Less

Cat Cams Camshaft Set - 288/280 12.75mm/12.50mm Lift - E46 M3 With R...

T#:4414885

Part#: 1301805KIT

Special Order: No Guaranteed ETA

$ 4,372.99 USD

Add to Wish List

Qty

$ 4,372.99 USD

Add to Wish List

Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is. The included rocker arm kit consist of: - 24x "CAT031" rocker arm, steel billet, coated - 1x oil connector bridge - rocker arms with 0.5mm oil jet hole towards the cam/follower contact area - rocker arm shafts need to be drilled at each rocker arm (in the groove already present) - rocker arm shafts need to be drilled at oil bridge connector (no need to make extra groove, connector has internal groove) - intake rocker arm shaft needs front plug to close - intake rocker arm shaft has no oil feed so an oil bridge is required to connect the intake/exhaust rocker arm shafts *Please note that the factory cams ave a pressure regulator valve that needs to be removed and installed in the new cams*

Show More Show Less

JE Pistons Forged Piston Set Of 6 - 87.5mm Bore - 11.5:1 CR - E46 M3 ...

T#:599660

Part#: 297118

In Stock

$ 1,324.99 USD

Add to Wish List

Qty

$ 1,324.99 USD

Add to Wish List

Features: Crown requires no deburring or preparation 2618 T6 high tensile forged aluminum New asymetrical FSR forging! State of the art asymmetrical skirt technology reduces friction and mass while providing a more rigid and durable platform In this environment, higher boost levels or heavy nitrous usage necessitate JE's wrought 2618 alloy FSR pistons include offset pins for quiet operation Pistons feature new Smooth Finished Crown process for excellent flame travel 1.0 x 1.2 x 2.8mm ring widths .827 x 2.250 straight wall carbon steel wrist pin provided Pin fitting, rings and wire locks included Specifications: Bore (in): 3.445 Bore (mm): 87.50 Top Compression Ring Thickness: 0.0400 Second Compression Ring Thickness: 0.0480 Oil Ring Thickness: 0.111 Forging Type: FSR Volume (cc): -13.80 Series: JE Pistons Piston Head Type: Inv Dome/Dish Pin Diameter (IN): 0.827 Compression Height: 1.271 Make: BMW Wrist Pin Style - floating or press fit: Floating Wall Type: CHAMFERED Wall Thickness (IN): 0.150 Ringset Part Number: JG1001-3445 Ring Brand: ProSeal Ringset Included: Yes Retainer Thickness: 0.063 Retainer Lock Style: Wire Lock Retainer Lock Part Number: 827-063-MW Retainer Diameter (IN): 0.827 Replacement Single Piston: 297118S Replaced By: 289132 Piston Pin Inside Diameter: 0.527 Piston Pin Material: 5115 LOW CARBON STEEL, CASE HARDENED Piston Material: 2618 Piston Pin Length (IN): 2.250 Piston Avg Wt: 332 Pin Offset: Yes Pin Brand: JE Pistons Pin Part Number: 827-2250-15-51C Pin Included: Yes Pin Diameter (mm): 21.00 Oil Rail Support Included: No Deck Clearance: -0.008

Show More Show Less

Cat Cams M52TU B28 Hot Street Camshaft Set

T#:578587

Part#: 1304406

Special Order: No Guaranteed ETA

$ 1,642.99 USD

Add to Wish List

Qty

$ 1,642.99 USD

Add to Wish List

Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

Cat Cams M52TU B28 Sport Camshaft Set

T#:578586

Part#: 1304405

Special Order: No Guaranteed ETA

$ 1,642.99 USD

Add to Wish List

Qty

$ 1,642.99 USD

Add to Wish List

Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

JE Pistons Set Of 6 Pistons

T#:5122283

Part#: 297119

Back Ordered

$ 1,324.99 USD

Add to Wish List

Qty

$ 1,324.99 USD

Add to Wish List

JE Pistons are specifically engineered for extreme applications up to, and including, professional competition. In this environment, higher compression ratios, extreme boost levels and heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy found in every JE Piston. *Application Specific Forgings for an Optimized, Uniform Crown Thickness *Contact Reduction Groove to Minimize Frictional Drag *Accumulator Groove for Increased Top Ring Stability and Sealing *CNC-Machined Side Relief with Lower Support Band for Additional Skirt Strength *Honed Pin Bores, Double Pressure Fed Pin Oilers and Wire Locks Included *JE ProSeal Piston Rings are included with your JE Pistons

Project Cars

SELECT YOUR BMW

BMW Internal Engine Parts for BMW 3 Series E46 (1999-2005)

Sub-Categories

Bav Auto Crankshaft Pulley Holding Tool

Cat Cams Camshaft Set - 288/280 12.75mm/12.50mm Lift - E46 M3 With R...

JE Pistons Forged Piston Set Of 6 - 87.5mm Bore - 11.5:1 CR - E46 M3 ...

Cat Cams M52TU B28 Hot Street Camshaft Set

Cat Cams M52TU B28 Sport Camshaft Set

JE Pistons Set Of 6 Pistons

Select Vehicle

Purpose

Category

Brand

Price

Special Offers

Shipping

Narrow Results