Availability

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Filters
Rocker Stud Thread Diameter
- 3/8-24 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 7/16-20 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Minimum Rocker Slot Width
- 0.550 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 0.600 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Overall Height (in.)
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- 1.35 (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.

Engine Works Polylocks

5.0 out of 5 stars 2 Customer Reviews

Engine Works rocker arm and stud girdle polylocks are manufactured from high-grade alloy steel, finished in black oxide, and feature cold-formed 12-point reduced heads for quick R and R. The bottom of each one incorporates a .550 in. step that centers the polylock on the trunnion of the rocker arm, and they are available in both 7/16 in. and 3/8 in. sizes. The stud girdle polylocks have a .950 in. long shank. Choose the size you need.

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