This twist on cap fits most valve covers with 1.25″ holes. No grommet required. Available in chrome and black finishes. Made from high quality steel.GM Style Twist-In Oil Filler Cap – Chrome $4.99PriceFinish*SelectQuantity*Add to CartBuy NowProduct Details Weight .5 lbs Dimensions 6 × 4 × 1 in Finish Black, Chrome Material Steel Quantity 1 No Reviews YetShare your thoughts. Be the first to leave a review.Leave a Review