These Procomp Electronics flexible and machined engine dipsticks are designed to coordinate with Procomp Electronics's flexible transmission dipsticks. Their slim design allows for easy installation inside of headers to work with OEM exhaust manifolds. They have clearance for block hugger headers or can be applied straight into the engine block (without tube), depending on your application needs. All engine dipsticks feature an E-Z read aluminum or steel stick (depending on your application) for an accurate measurement of engine oil.