Yukon Gear & Axle · New
USA Standard Spartan Locker For GM 12 Bolt Car & Truck w/ 30 Spline Axles
MPN SL GM12-30 · Store SKU yukSL GM12-30
Supplier stock checked 11/8/2026, 10:30:34 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
The Spartan Locker is a lunchbox locker that delivers reliable, 100% lockup traction at a low cost. It's design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! Spartan Locker for GM 12T & 12P, 30 spline, includes heavy-duty cross pin shaft
Manufacturer fitment & guides
Check SL GM12-30 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y