Crushproof Y-Assembly 4" For Twin Diesel
Crushproof Y-Assembly 4" For Twin Diesel

Crushproof Y-Assembly 4" For Twin Diesel

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Crushproof Y-Assembly 4" For Twin Diesel
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Crushproof offers a complete line of accessory items. Accumulated customer input, our own technology, and extensive testing have created the best products available. Our accessory items will not only facilitate the ventilation of exhaust fumes but will prolong the life of the hose.

  • This hose must be used with a fan-assisted system and will not work during the regeneration cycle.
  • Designed for twin exhaust pipes on new diesel pick-up trucks but,  it is great for use on ALL dual exhaust vehicles!
  • CRUSHPROOF Y-assemblies are designed for converting a single hose into two hoses for dual exhaust vehicles, and this product can also be connected to a standard black hose.

Part No.



Tailpipe Adapter


2- 5 x 4” Hose

1 –AY40

2 – F475 DYNO Oval

Manufacturer: Crushproof Tubing Company
Warranty: 100% Guaranteed Against Manufacturing Defects
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