BPW AL Parabolic Spring 51mm Small Crank
BPW AL Parabolic Spring 51mm Small Crank
$755.00
BPW AL parabolic spring for 100mm wide M30 spring-eye suspension setups, with single straight 51mm small-crank profile to match the existing trailer trailing arm during air suspension service and replacement work.
Part number SP7678G.
Description
Overview
BPW AL parabolic spring supports the trailing arm connection on BPW AL air suspension systems with 100mm wide trailing arms and M30 spring eye bolts. The single straight 51mm small-crank layout suits replacement work where the existing BPW AL spring profile and part number match the trailer suspension.
Features
- Single leaf parabolic spring for BPW AL suspension applications.
- 51mm spring profile with small-crank straight layout.
- Suits 100mm wide trailing arm BPW AL/SL/O suspension catalogue context.
- Matches M30 spring eye bolt suspension setups where the existing spring confirms the same BPW number.
Specifications and Materials
This BPW AL parabolic spring suits BPW AL suspension with 1 x 51mm spring profile and 100mm wide trailing arm setup. BPW catalogue data lists the matching AL trailing arm reference with D 30mm, H 70mm, K 500mm, BH 310mm and related spring strap reference for the single leaf arm. Part number: SP7678G.
Match the stamped BPW number, spring profile, spring eye bolt size and trailing arm measurements before ordering.
See the BPW air suspension trailing arms catalogue
Compatibility and Fitment
Check the underside stamp on the spring tip near the airbag area before fitting. Also compare the BPW AL suspension type, 100mm trailing arm width, M30 spring eye bolt setup and 51mm spring profile before replacing one side.
These cross-references show where this part replaces the part numbers and applications listed. Some installations may need minor changes. 05.082.13.59.0, 0508213590
Related Parts
Check the related service parts below against the trailer setup before ordering.
| Use | Part number | Part type |
|---|---|---|
| Spring strap to suit | 05.348.30.05.0 | Trailing arm spring strap |
| Related version | SP7676G | BPW cranked parabolic spring |
| Related version | SP7681G | BPW AL2 single leaf spring |
Compliance and Safety
Support the trailer safely before removing the spring and release suspension load through the correct workshop procedure. Inspect the spring eye, hanger, axle seat, U-bolts, spring strap and shock absorber mounts before reassembly. Then tighten all fasteners to the correct BPW service procedure and confirm suspension alignment before road use.
Trailer Applications
Workshops fit this BPW AL parabolic spring during air suspension trailing arm replacement on heavy trailer axle groups. It suits service work where the spring has cracked, sagged, worn through the eye area or no longer matches the trailer ride and axle alignment requirements.
Cross-reference and Suitability
This part cross-references to or suits the following equivalent part numbers and compatible alternatives:
| 05.082.13.59.0 | 0508213590 |
Why Choose ICS Trailers
ICS Trailers supplies heavy trailer suspension parts for spring, axle and air suspension repairs. This BPW AL parabolic spring gives workshops the spring type, BPW AL fitment and matching cross-reference needed before replacing the trailing arm assembly.
Browse more trailer suspension parts in the Suspension Parts category
Online prices apply to website orders only. In-store pricing may differ.







