When a diesel engine swallows a swirl flap or suffers from severe oil starvation, the pistons and connecting rods are usually destroyed. Buying four brand new piston and rod assemblies from the dealership is often enough to write off the entire engine build. We supply genuine, structurally sound OEM alternatives so you can rebuild your bottom end cost effectively.

Genuine BMW diesel pistons and connecting rods. They have been removed directly from a running B47 engine. The pistons feature the factory combustion bowl design, and the gudgeon pin bore is clearly stamped with the OEM identifier AE 48/14 2687.

Every piston and rod that hits our Coventry workbench goes through a strict visual check. We inspect the piston skirts for deep vertical scoring (piston slap damage), check the crowns for valve contact or melting, and inspect the big end rod journals to ensure they haven’t suffered from spun bearing heat damage. It is a solid, honest internals ready to drop into your block.

Workshop Note: to guarantee compression and longevity, we strongly advise fitting a brand new set of piston rings and big end bearings before installing these into your block.

Genuine OEM BMW: factory heavy duty internals (Stamp: AE 48/14 2687).

Complete Set: includes 4 x pistons securely attached to their matching connecting rods.

Inspected Quality: visually checked for heavy skirt scoring, crown damage and spun big end journals.