Speedmaster 5/16 Polylok Rocker Arm Nut Set – 255 Style PCE255.1001
Speedmaster 5/16 Polylok Rocker Arm Nut Set – 255 Style PCE255.1001
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Speedmaster 5/16 Polylok Rocker Arm Nut Set – 255 Style PCE255.1001

5 stars out of 5 reviews
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25 ratings

About this item

Got a performance build?

Comp Cams 4610-16 Rocker Arm Nut - Pit Stop USA

Grab these Speedmaster polylok rocker arm nuts.

Rocker Arm Nuts - Polylock Rocker Arm Nut Style - 3/8-24 in

They're the 5/16″ size, designed for 255 style rockers.

Isky Racing Cams PL516 Isky Rocker Arm Adjusting Nuts | Summit Racing

Brand new, part number PCE255.1001, also cross-referenced as PC2401-5/16unf.

Speedmaster PCE255.1008 7/16 Poly Sure Lock Rocker Arm Nut Set (Suts

These are the ones you want to keep your valve lash locked tight.

Where to find a 5/16 press in rocker arm stud for a 71 302 engine

Oh, and California folks—there's a Prop 65 warning on this, so just a heads up.

7/16″ Polylock Rocker Arm Nut Set (Suits: Aluminum Rockers

They're solid, ready to install, and UPC 840136522492 is your proof they're legit Speedmaster gear.

Crower 86050-16 Sure Lock Polylocks .600 base (set of 16

$ 14.75
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