Proflow's Flexible Stainless Engine Dipsticks are designed with a billet aluminium handle to coordinate with Proflow's Flexible Transmission Dipstick. Slim design allows mounting inside headers. Designed for use with factory or block hugger headers. Applications available for GM, Ford and Chrysler. Easy to Read flexible inner dipstick measuring cable for accurate measure of engine oil. Note: Some after-market oil pans may require a custom made dipstick.