Heavy duty engine diaper will contain engine oil and fragments if an engine failure occurs. Increase safety and reduce the chance of control loss due to debris on the racing surface. Diaper wraps around oil pan and secures to header bolts. Diaper is offered in two versions; NHRA/IHRA approved unit is required in many sportsman drag racing classes including Advanced E.T., Super Gas, Super Comp, Top Dragster, Top Sportsman and Competition Eliminator. The SFI-approved diaper is also accepted in the aforementioned sportsman classes while meeting 7.2 specifications. Includes four heavy duty webbed straps and buckles. ALL69011 has a sewn-in, non-replaceable oil absorbent pad. ALL69012 includes a replaceable oil absorbent pad. 23" long x 12-1/2" high x 12" wide.