Front Seat Rubber Diaphragm – Mk1 & Mk2 and Leyland Clubman Classic Mini – 1962–1978 – With Mounting Clips
Restore the comfort and support of your early Classic Mini Mk1 or Mk2 and Leyland Clubman Mini front seat with this replacement full rubber-style seat diaphragm, designed for applicable vehicles manufactured from approximately 1962 to 1978.
The seat diaphragm forms the supportive base beneath the seat cushion. After decades of use, original diaphragms can stretch, split or completely fail, causing the seat cushion to sag and significantly reducing seating comfort.
This one-piece rubber diaphragm provides an effective replacement and is supplied with the necessary mounting clips for installation.
Features
- Replacement full rubber seat diaphragm
- One-piece rubber construction
- Designed for applicable Mk1 & Mk2 and Leyland Clubman Mini Classic Mini front seats
- Suitable for approximately 1962–1978 applications
- Restores support beneath the seat cushion
- Helps eliminate sagging caused by deteriorated original diaphragms
- Durable replacement for worn, stretched or split seat supports
- Mounting clips included
- Ideal for seat restoration and interior refurbishment
Suitable For
- Classic Mini Mk1
- Classic Mini Mk2
- Leyland Clubman Mini
- Applicable early Morris Mini and Austin Mini models
- Approximately 1962–1978
- Original-style front seats using the corresponding full rubber diaphragm arrangement
Restores Seat Support & Comfort
The diaphragm is an important structural component of the Classic Mini seat.
When the original rubber deteriorates, the seat cushion loses support and the seating position can become noticeably lower and less comfortable.
Replacing the diaphragm helps restore the correct support and feel of the seat, particularly when combined with good-quality seat foam and correctly fitted upholstery.
Package Includes
- 1 x Full rubber-style seat diaphragm
- Mounting clips as required for installation
Important Fitment Information
Classic Mini seat frames and diaphragm arrangements changed during production, and many cars have had seats replaced or modified over the years.
We recommend identifying the actual seat frame fitted to the vehicle rather than relying solely on the vehicle's year of manufacture.
Please Note
Price is for ONE seat diaphragm only.
If restoring both front seats, 2 diaphragms will be required.
Seat frame, seat foam, upholstery and other trim components are not included unless specifically stated.
Why Buy from Mini World Australia?
✔ Trusted Classic Mini & Moke specialists since 1996
✔ Huge range of Classic Mini interior and restoration parts
✔ Australia-wide and international shipping available
✔ One-stop shop for Classic Mini parts, restorations, styling and upgrades
✔ Experienced enthusiast support with extensive product knowledge
✔ Passionate about Classic Minis and Mokes with over 30 years industry experience
✔ Trusted by restorers and enthusiasts Australia-wide
✔ Quality parts for restoration, interior refurbishment & preservation





















