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Mahle motorsport main bearing set std from YBB1614: Ford Sierra/Escort Cosworth YB VM1002/STD

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Mahle motorsport main bearing set std from YBB1614: Ford Sierra/Escort Cosworth YB VM1002/STD
No Tax, Each £120.83 Taxed, Each £145.00
Available From Stock
HD cast substrate with lead indium overlay. The new range of....


HD cast substrate with lead indium overlay. Journal diameter 56.975/56.959mm. Keep width: 3.9mm block 4.8mm main cap.

The new range of Mahle Motorsport bearings contains technology that has been transferred from Mahle’s F1 bearing technology. All bearings in this range are identified by laser marking as opposed to stamping.

Benefits of Laser Marking:

The cheapest method of identifying a bearing is by stamping. For motorsport applications where higher temperatures are experienced, the effectiveness of heat transfer into the housing should not be compromised. If the stamping is heavy and extends quite far round the bearing causing poor back contact then the efficiency of heat transfer will be reduced.

Laser marking is an alternative method which creates smaller, more consistent marking which does not distort the backing and as such does not disrupt the back contact and subsequent heat transfer.

From YBB1614 - what does this mean?
Early 3 Door Cosworth models with engines up to number YBB1613 (this number is stamped on the front face of the block just above the water pump) had slightly different bearings. The bearing keep (or notch) was the same size in the block and the main bearing cap. Engines produced after this have a wider keep in the main cap. Therefore if you try to fit these bearings to an early engine, the main cap bearings will not fit unless they are modified. This change in bearing design makes it impossible to fit the bearings incorrectly - grooved bearing in the block, plain bearing in the cap.

What's the difference between Cosworth YB and Pinto main bearings?
Apart from the keep width mentioned above, the difference is the main cap bearing. The Cosworth engine uses a plain bearing which is capable of taking greater loads than the grooved bearing found in Pinto sets. Whilst a Pinto set will fit, we highly recommend sticking to the correct bearings that Cosworth have always specified for the engine.

Ford Cosworth YB 16v Turbo
  • Ford Sierra RS Cosworth 3 door 1986-1987 from engine YBB1614
  • Ford Sierra Cosworth RS500 1987
  • Ford Sierra Sapphire RS Cosworth 2wd 1988-1989
  • Ford Sierra Sapphire RS Cosworth 4wd 1990-1992
  • Ford Escort RS Cosworth 4wd T34 1992-06/1994
  • Ford Escort RS Cosworth 4wd T25 06/1994-1996
Additional Information

Additional Information

Part No VM1002/STD
Fits Engine Type Ford Cosworth YB
Product Group Crank Bearings & T/Washers
Replaces Part Nos SC481AS/STD SC481S/STD
Stock Status Available From Stock
Fits Engine Make Ford
Catalogue 2018 Page Click HERE to view this part on page 21 of our 2019 catalogue
Brand Logo MAHLE Motorsport
Fits Model Variant Ford Escort Cosworth, Ford Sierra (2WD Cosworth), Ford Sierra (4WD Cosworth)

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