Genuine Rival Performance Diaphragm OE Replacement Kit (BMW B58 PCV Fix)
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The BMW B58 engine is known for premature PCV diaphragm failure, which is often caused by the original rubber becoming brittle and cracking over time. This leads to vacuum leaks, poor performance, and fault codes.
Buy cheap, buy twice! Our Rival Performance Diaphragm OE Replacement Kit is superior and includes everything you need to restore back to proper function, including a new diaphragm cap and replacement end cap! This is ideal since the original is often damaged during the removal process.
Unlike many low-cost alternatives on the market, this is not a flimsy import or a generic copy. ours are built to last, developed by enthusiasts who understand what proper quality should look like under the bonnet.
A must-have upgrade!
Specifications:
✔ Designed with longevity in mind
✔ No cheap or questionable materials used
✔ Backed by a UK-based performance brand
✔ Includes end cap to prevent installation issues
note: image is for illustration purposes and may differ on delivery
UK DELIVERY & STOCK INFORMATION
We hold one of the most extensive ranges of performance parts in the UK through our trusted supplier network. Most in-stock items are dispatched the same working day when ordered before 2PM.
If something isn’t currently in stock, it’s usually unavailable anywhere else - but we’ll always do our best to source it quickly and keep you updated.
Keep an eye on the stock status shown on each product - this provides an accurate guide to availability and lead times. On rare occasions, supplier updates may cause small variations in delivery times.
- FAST UK DISPATCH
- MULTIPLE WAREHOUSES
- ORDER SUPPORT
RETURNS & WARRANTY
We always aim to make sure you’re happy with your order, and our team is here to help if there’s ever an issue.
Unused items can be returned within 14 days of delivery for a refund or exchange, provided they’re in original packaging and resellable condition.
Some products may be subject to a restocking or processing fee, and custom or made-to-order items (such as brake lines, custom colours, or special builds) can’t be cancelled or refunded once production begins.
If you’re unsure whether your item is custom, please contact us before ordering.
Most products include a 12-month manufacturer warranty, and we’ll always help guide you through the process if something goes wrong.
For full details, please see our Returns Policy.
- EASY RETURNS
- UK CUSTOMER SERVICE
- Over 10 Years Experience