BMW Internal Engine Parts for MINI

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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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Adjustment Unit - Inlet Cam

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T#:637193

Part#: 11367545862

Ships in 1 Business Day

$ 130.99 USD

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$ 130.99 USD

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MINI R55 to R61 Main Bearing Set - +.25 Size

T#:31158809

Part#: 5M7788H-.25

Ships on Aug 14, 2026

$ 204.99

This product was last offered at the strikethrough price on
04-09-2026

$ 201.99 USD

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$ 201.99 USD

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MINI R55 to R61 Main Bearing Set - +.25 Size

The MINI R55 to R61 Main Bearing Set - +.25 Size is engineered for superior performance and reliability. Constructed from high tensile strength steel alloy, these bearings enhance rod bearing strength and retention. The increased crush improves bearing retention by enhancing radial contact pressures and heat dissipation. Bearing eccentricity is optimized to compensate for bore distortion and supports the formation of a hydrodynamic oil film, ensuring smooth engine operation. This set is +.25 size over standard, offering a precise fit for your MINI.

Increased Strength: Higher tensile strength steel alloy for improved bearing durability.
Enhanced Retention: Greater crush for better bearing retention and heat dissipation.
Optimized Eccentricity: Compensates for bore distortion and supports hydrodynamic oil film formation.
Precise Fit: +.25 size over standard for a perfect fit in your MINI.

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