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BMW Internal Engine Parts for BMW Z3 (1996-2002)

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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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Rein Piston Rings - Set - Single Piston - E36, Z3

2X Entries Into Our F80 M3 Sweepstakes

T#:591603

Part#: 11251405783

Back Ordered

$ 43.99 USD

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$ 43.99 USD

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Replace your worn out piston rings with OE replacements - 86.415mm

Rein Piston Rings - Set - Single Piston

2X Entries Into Our F80 M3 Sweepstakes

T#:592808

Part#: 11251247917

Ships in 3 Business Days

$ 36.99 USD

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$ 36.99 USD

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Replace your worn out piston rings with OE replacements - 85.065mm

Ferrea Performance Intake Valve - Stock Size

T#:583445

Part#: F1550P

Back Ordered

$ 34.99 USD

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$ 34.99 USD

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Rein Piston Ring Set

2X Entries Into Our F80 M3 Sweepstakes

T#:379819

Part#: 11251437077

Ships in 3 Business Days

$ 31.99 USD

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$ 31.99 USD

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Standard bore replacement piston rings

Ferrea Performance Exhaust Valve - Stock Size

T#:583444

Part#: F1552P

Ships on Oct 27, 2026

$ 34.99 USD

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$ 34.99 USD

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Cat Cams Upraded Camshafts - 268/268 - 230/230 - 10.45mm/10.45mm - 1....

For non-TU M52B28 (Single VANOS)

T#:28271168

Part#: 1304214

Ships on Nov 20, 2026

$ 1,524.99 USD

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$ 1,524.99 USD

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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

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$ 4,372.99 USD

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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*

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Rein Exhaust Valve - E34, E36, E39, E46, Z3

2X Entries Into Our F80 M3 Sweepstakes

T#:379738

Part#: 11341739823

Ships on Oct 27, 2026

$ 20.99 USD

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$ 20.99 USD

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Replacement exhaust valve

Cat Cams M52B28 Hot Street Camshaft Set

T#:5858417

Part#: 1304213

Special Order: No Guaranteed ETA

$ 1,524.99 USD

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$ 1,524.99 USD

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Upgrade your M52B28 Engine with Cat Cams, a leader in the performance-aftermarket camshaft industry. These Camshafts will increase airflow into the engine by increasing the overall lift and duration over the factory cams. With their Sport cam setup, you can run all factory valvetrain, with no valve spring upgrades necessary! The VANOS (VVT) system on the intake camshaft changes the valve timing: M52 /B28: from 115° to 90° (exhaust: 105° fix) The data are shown for full intake retard (disengaged VVT). Check the distance between valves and piston to be 1mm at least with VVT engaged. Wrong installation will cause severe engine damage! Duration Intake @ .1mm: 257° Exhaust @ .1mm: 257° Intake @ 1mm: 220° Exhaust @ 1mm: 220° Lift Intake: 10.15mm Exhaust: 10.15mm Lobe Angle Intake: 110° Exhaust: 105°

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Cat cams Sport camshaft set 263/256 11.00mm/10.50mm - Z3 1.9 E36 318i...

T#:578599

Part#: 1301712

Special Order: No Guaranteed ETA

$ 1,170.00 USD

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$ 1,170.00 USD

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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.

OEM Rein Camshaft / Crankshaft Sensor O-Ring - Multiple BMWs ...

Cam sensor - intake or exhaust side

2X Entries Into Our F80 M3 Sweepstakes

T#:12463

Part#: 12141748398

In Stock

$ 4.99

This product was last offered at the strikethrough price on
06-29-2026

$ 2.75 USD

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$ 2.75 USD

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This is the o-ring used for most BMW camshaft sensors and crankshaft sensors. Although most sensors that we sell come with this o-ring at no charge, they may be the source of oil or fluid leaks.

Piston Ring - Priced Per Piston | BMW M54 3.0L Engine

2X Entries Into Our F80 M3 Sweepstakes

T#:591606

Part#: 11257506252

Ships in 3 Business Days

$ 48.99 USD

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$ 48.99 USD

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Piston Ring - Priced Per Piston | BMW M54 3.0L Engine is a vital component in maintaining proper compression and oil control in BMW M54 3.0L engines. Over time, piston rings experience wear from continuous movement within the cylinder bore, leading to decreased engine efficiency. Worn or damaged rings can result in excessive oil consumption, reduced performance, and visible black or blue smoke from the exhaust. Ideal for engine rebuilds, this high-quality replacement ensures optimal sealing and longevity.

Restores proper compression and oil control for improved engine performance
Reduces oil consumption and minimizes exhaust smoke
Direct-fit replacement for BMW M54 3.0L engine pistons
Manufactured from high-strength materials for durability and longevity
Essential for engine rebuilds and maintaining peak efficiency
Designed to withstand high temperatures and pressures for reliable operation

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Cat Cams M52B28 Sport Camshaft Set

T#:25805790

Part#: 1304212

Special Order: No Guaranteed ETA

$ 1,524.99 USD

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$ 1,524.99 USD

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Upgrade your M52B28 Engine with Cat Cams, a leader in the performance-aftermarket camshaft industry. These Camshafts will increase airflow into the engine by increasing the overall lift and duration over the factory cams. With their Sport cam setup, you can run all factory valvetrain, with no valve spring upgrades necessary! The VANOS (VVT) system on the intake camshaft changes the valve timing: M52 /B28: from 115° to 90° (exhaust: 105° fix) The data are shown for full intake retard (disengaged VVT). Check the distance between valves and piston to be 1mm at least with VVT engaged. Wrong installation will cause severe engine damage! Duration Intake @ .1mm: 250° Exhaust @ .1mm: 250° Intake @ 1mm: 213° Exhaust @ 1mm: 213° Lift Intake: 9.55mm Exhaust: 9.55mm Lobe Angle Intake: 110° Exhaust: 105°

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Cat Cams M52B28 Sport Camshaft Set

T#:25805789

Part#: 1304211

Special Order: No Guaranteed ETA

$ 1,524.99 USD

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Qty

$ 1,524.99 USD

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Upgrade your M52B28 Engine with Cat Cams, a leader in the performance-aftermarket camshaft industry. These Camshafts will increase airflow into the engine by increasing the overall lift and duration over the factory cams. With their Sport cam setup, you can run all factory valvetrain, with no valve spring upgrades necessary! The VANOS (VVT) system on the intake camshaft changes the valve timing: M52 /B28: from 115° to 90° (exhaust: 105° fix) The data are shown for full intake retard (disengaged VVT). Check the distance between valves and piston to be 1mm at least with VVT engaged. Wrong installation will cause severe engine damage! Duration Intake @ .1mm: 240° Exhaust @ .1mm: 240° Intake @ 1mm: 203° Exhaust @ 1mm: 203° Lift Intake: 9.25mm Exhaust: 9.25mm Lobe Angle Intake: 110° Exhaust: 105°

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Sport camshaft set 255/248 10.50mm/10.00mm - Z3 1.9 E36 318i ...

T#:578598

Part#: 1301711

Special Order: No Guaranteed ETA

$ 1,170.00 USD

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Qty

$ 1,170.00 USD

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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.

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