Heavy duty engine diapers 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. Diapers wrap around oil pan and secure to header bolts. Diapers are offered in two versions. The NHRA/IHRA approved unit (ALL69011) is required in many sportsman drag racing classes including Advanced E. T. , Super Gas, Super Comp, Top Dragster, Top Sportsman and Competition Eliminator. ALL69011 has a sewn-in, non-replaceable oil absorbent pad. The SFI diaper (ALL69012) meets the same sportsman classes and SFI 7. 2 specifications. ALL69012 includes a replaceable oil absorbent pad and four heavy duty webbed straps and buckles. Units measure 23" long x 12-1/2" high x 12" wide.Pit Stop USA offers Allstar Performance Engine Diaper Black - (Non-SFI) - 23" L x 12" H x 12" W ALL69011 at low everyday prices. Be sure to check out all of our products from Allstar Performance including Allstar Performance Engine Diapers.