JE Pistons · New
JE Pistons Chrome Silicon Wire Lock .669 x .050
MPN 669-050-MW · Store SKU jep669-050-MW
Supplier stock checked 11/7/2026, 8:06:45 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
Most JE shelf pistons include double spiro locks as standard equipment. These locks are installed by spreading the lock and rotating it into the piston pin boss. Wire locks are installed similarly, but require chamfered wrist pins. Wire locks tend to spread side loads over more of the piston pin boss area and are considered to be a stronger pin retention method. Hook wire locks have an integrated hook at the end gap to prevent rotation within the lock groove. Tru-arc locks fall between these to and can be used with the stock sharp edge wrist pins’ the advantage of tru-arc locks is the ease of installation and reusability (spiro locks cannot be re-used). However, tru-arc locks are only recommended for lower horsepower applications. Wrist Pin Retainer, Wire Lock, Chrome Silicon, 0.669 in. Diameter, 0.050 in. Lock Thickness, Each. Wrist Pin Retainer, Wire Lock, 0.669 in. Dia., 0.050 in. Thickness, Each.
Manufacturer fitment & guides
Check 669-050-MW against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- California Proposition 65: Y
