The Automann M5308 spring pin (also known as a shackle pin) is a rugged suspension component engineered for heavy-duty use on Peterbilt and Kenworth trucks. Precision-formed from hardened steel, it’s built to endure high loads, resist wear, and maintain suspension alignment for a smoother, safer ride.
| Attribute | Value |
|---|---|
| Pin Diameter | 1.250 in (1¼″ / 31.8 mm) |
| Overall Length | ~6.850 in (6 27/32″ / 17.37 cm) |
| Center‑to‑Center (groove) | ~5.320 in |
| Type | Type 1 non-threaded spring/shackle pin |
| Weight | ~2.2 lb (1 kg) |
Designed specifically for front and rear spring eye mounting on Peterbilt and Kenworth steering axles (e.g., T300, K300, T600 series)
Ideal for 4.0″ wide spring packs; replaces similar pins like M5306
Compatible OEM and aftermarket equivalents include:
Peterbilt: 02‑01767, 02‑01781, 201767, 201781
Kenworth: K179527, K179‑527
Dayton: 327‑483
Flagg: B1420‑75
Automann/ATRO: ATRO SP75‑11781, ATRO SK75‑10200, M1500, MPB452, MPB60, M5308H
Meritor: G16319
Power10/SB‑1420, Elite Truck ETP‑02‑01781
Precision-machined with exact diameter and length for OEM-grade suspension fit
Hardened steel finish ensures durability and resistance in demanding road conditions
Maintains proper alignment in spring packs to reduce bushing wear and improve ride comfort
Suitable for fleet, vocational, and commercial trucks running heavy loads
Searching for a 1.25″ x 6.85″ spring pin that matches Peterbilt/Kenworth specs? Here’s why M5308 stands out:
OEM-fit & multiple cross-refs ensure compatibility across many brands
Trusted aftermarket quality from a leading parts supplier
Exact replacement for M5306 but for wider spring applications
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