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Williams Performance Built Forged B58 Engine


This package is for one of our FULLY built B58 engines, ready to take as much power as you can through at it.

If your aiming for big power and want it to be reliable then this is the ideal path to take!

WE have options for built head using Ferrea valves/springs and we can also offer our custom sleeves, only available through us.

Pistons - Mahle 10.5:1 or CP 11:1

Rods - PPM forged with ARP2000 bolts

ACL Rod Bearings 

King Mains Bearings

ARP Mains & Head Studs

Genuine BMW Front & Rear Crank Seals

Oil Pan Sealant

Genuine BMW Chain Tensioner

Genuine BMW Head Gasket

Genuine BMW Valve Cover Gasket

Genuine BMW Oil Pan bolts

Other Associated Bolts/seals

All required bolts/seals/gaskets are genuine BMW items.

We can also provide you with Millers running in oil and some instructions for running in your engine.

If you would prefer you can also send us the car to remove/refit engine then run it in and even tune it for you.

Please note: this is an exchange engine, so we require your old engine back, or sent to us in advance. If it is an exchange then there is a £1500 deposit, which is refunded once we receive your old engine.