Westfield Chesil Limited Posted May 11, 2021 Share Posted May 11, 2021 Good Morning All, We have made the decision to remove the AP master cylinder from our product line, due to lead times from AP. Regards Parts Dept. 2 Quote Link to comment Share on other sites More sharing options...
Greenstreak-Andy D Posted May 11, 2021 Share Posted May 11, 2021 Shame, just glad I had a new one off you guys recently. Andy Quote Link to comment Share on other sites More sharing options...
Charlie_Zetec Posted May 31, 2022 Share Posted May 31, 2022 Do you stock the seal kit to refurb existing units, or is this something we’d need to order from AP direct? Anyone know the kit part no.? Quote Link to comment Share on other sites More sharing options...
Greenstreak-Andy D Posted June 1, 2022 Share Posted June 1, 2022 Try Questmead and quote your master cylinder CPxxxx number. I’m sure they can help. Did @Si.Dalziel buy a set? https://www.questmead.co.uk/Categories/Repair-Parts/AP-Racing/Master-Cylinders Andy 1 Quote Link to comment Share on other sites More sharing options...
Dave Eastwood (Gadgetman) - Club Chairman Posted June 1, 2022 Share Posted June 1, 2022 @Ian Kinder (Bagpuss) - Joint Peak District AO bought spares recently, IIRC. Quote Link to comment Share on other sites More sharing options...
Si.Dalziel Posted June 1, 2022 Share Posted June 1, 2022 4 hours ago, Greenstreak-Andy D said: Try Questmead and quote your master cylinder CPxxxx number. I’m sure they can help. Did @Si.Dalziel buy a set? https://www.questmead.co.uk/Categories/Repair-Parts/AP-Racing/Master-Cylinders Andy Mine was repaired by AP. Quote Link to comment Share on other sites More sharing options...
Ian Kinder (Bagpuss) - Joint Peak District AO Posted June 1, 2022 Share Posted June 1, 2022 1 hour ago, Dave Eastwood (Gadgetman) - Club Chairman said: @Ian Kinder (Bagpuss) - Joint Peak District AO bought spares recently, IIRC. I bought caliper parts not MC though. Quote Link to comment Share on other sites More sharing options...
DIY-Si Posted June 2, 2022 Share Posted June 2, 2022 I think I got mine from Questmead. The seal kit Inused is CP4626-18RK. 1 Quote Link to comment Share on other sites More sharing options...
Dave Eastwood (Gadgetman) - Club Chairman Posted June 2, 2022 Share Posted June 2, 2022 One thing to be aware of, there are/were at least two different seal kits for the MC, one considerably more expensive, for the older MC's. I can't tell you the date, though Questmead should be able to. But essentially, some years ago, the original style seals AP used went out of production. AP Racing couldn't get an identical sized seal with the right cross-sectional profile. So I understand, from their technical notes, they re-designed the pistons to suit the new style of seal profile that they could get. As a result, I understand the seal kits for these older MC's come with the new style seals, and replacement pistons to match. Once the job is done, there is no performance difference or benefit in one MC version over the other. It's literally just a parts availability fix. Quote Link to comment Share on other sites More sharing options...
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