New Ballistic Material ** That’s right, DJ Safety has developed a new material that has drastically reduced the cost of the diapers, and they are lighter and thinner which makes them easier to fit!

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DJ Safety manufactures these extremely effective engine lower containment devices more commonly known as nappys or diapers. All of our diapers now meet SFI specifications with this particular product meeting the SFI 7.2 spec that the NHRA mandated for all Competition Eliminator, Super Comp and Super Gas.

The difference with the DJ Safety diapers is that they are built to withstand a severe engine explosion and contain the fluids that are lost in such an explosion. They have high sides, front and back to collect the parts and fluid and super absorbant pads to soak up the fluids to stop them exiting the diaper and oiling the racing surface.

Other brands on the market make just one universal size which can lead to fitment problems and also use inferior absorbant pads – unlike the quality USA made DJ Safety product. Made from multiple layers of balistic material with a nylon covering and quick release straps to secure to the engine and with three sizes to choose from, we have your combination – COVERED!!!

For Top Fuel applications – use SFI 7.1 spec diapers which have more balistic material to withstand the explosions associated with nitro.


Part Number



SB Engines


BB Engines



Additional information

Engine Type

Hemi, BB, SB

Diaper Mount

Header, Frame Rail


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