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

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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.

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King Performance BMW S54 Main Bearings - Std.

T#:25706115

Part#: MB7039AM

In Stock

13% off MSRP $ 207.00

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

$ 179.99 USD

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13% off MSRP

$ 207.00

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

$ 179.99 USD

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Ferrea Performance Intake Valve - Stock Size

T#:583445

Part#: F1550P

Back Ordered

$ 34.99

This product was last offered at the strikethrough price on
11-04-2026

$ 31.99 USD

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$ 31.99 USD

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King Performance BMW M50 Rod Bearings - Std.

T#:25706122

Part#: CR6640SM

In Stock

13% off MSRP $ 207.99

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

$ 179.99 USD

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Qty

13% off MSRP

$ 207.99

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

$ 179.99 USD

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Ferrea Performance Exhaust Valve - Stock Size

T#:583444

Part#: F1552P

Ships on Nov 30, 2026

$ 34.99

This product was last offered at the strikethrough price on
11-04-2026

$ 31.99 USD

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Qty

$ 31.99 USD

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SPA Performance High Performance Camshaft Set - 264� / 248� - BMW...

T#:44563338

Part#: EVCVSB02

In Stock

$ 1,049.99 USD

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Qty

$ 1,049.99 USD

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If you are building an M54 engine for the best possible performance, SPA Performance's 264° / 248° High Performance Camshaft Set may be just what you need! Performance camshafts allow for greater valve lift and increased lift duration, enabling your engine to breathe easier and faster, increasing the amount of fresh air entering the cylinders while allowing more of the exhaust gases to fully exit the cylinders.

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King BMW S54B32 3.2L Coated Performance Rod Bearing Set

T#:16707423

Part#: CR6877XP

In Stock at Vendor

3% off MSRP $ 309.99

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

$ 300.99 USD

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Qty

3% off MSRP

$ 309.99

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

$ 300.99 USD

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King's Racing Line of Performance Engine Bearings are for enthusiasts looking for an upgraded, coated connecting rod bearing to replace their OE bearings with. Constructed of a Silver base, these bearings are coated in a polymer-based coating to create a thermal barrier between your connecting rods and crankshaft. Complete Set of Bearing Shells

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King Performance BMW S54 Main Bearings - .25 Oversize

T#:25706120

Part#: MB7039AM0.25

Ships in 6 Business Days

13% off MSRP $ 207.00

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

$ 179.99 USD

Add to Wish List

Qty

13% off MSRP

$ 207.00

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

$ 179.99 USD

Add to Wish List

Replace your worn out OE main bearings with King's .25 Oversize Performance S54 Main Bearing Set!

JE Pistons Forged Piston Set - 84mm - 10.5:1 - M52

T#:11857228

Part#: JE-FPS-M52-84-10

Ships on Nov 30, 2026

$ 1,441.99 USD

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Qty

$ 1,441.99 USD

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Boost Your BMW's Engine with JE Pistons

Upgrade your BMW's engine with the JE Pistons Forged Piston Set designed for the M52 engine. These high-quality forged pistons feature a diameter of 84mm and a compression ratio of 10.5:1, ensuring improved performance and reliability for your BMW.

Enhances engine performance and reliability
Precision-engineered for optimal fit and function
High-quality forged construction ensures durability
Designed specifically for the M52 engine

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King Performance BMW S54 Rod Bearings - Set - .025

T#:25706111

Part#: CR6877XP0.25

Back Ordered

$ 300.99 USD

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Qty

$ 300.99 USD

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King's Racing Line of Performance Engine Bearings are for enthusiasts looking for an upgraded, coated connecting rod bearing to replace their OE bearings with. Constructed of a tri-metal base, these bearings are coated in a polymer-based coating to create a thermal barrier between your connecting rods and crankshaft. Complete Set of Bearing Shells - .025 Oversize

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JE Forged Piston Set - M54 2.5L

T#:26038609

Part#: JE-FPS-M54

Ships on Nov 30, 2026

$ 1,399.99 USD

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$ 1,399.99 USD

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Cat Cams M52TU B28 Turbo Conversion Camshaft Set

T#:25838979

Part#: 1304402

Special Order: No Guaranteed ETA

$ 1,642.99 USD

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$ 1,642.99 USD

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