Connecting your Speed Engineering longtube headers to the cat-back on your OBS K1500 4x4? This is the Y-pipe that completes the system. Built from 3" mandrel bent 304 natural stainless steel with TIG-welded construction and stainless steel band clamps included.
Revised Y-Pipe: This updated design now works with 4L60E and 4L80E transmissions using the factory pan.
⚠️ Important Notes:
- Designed to work with Speed Engineering longtube headers only — NOT compatible with factory exhaust manifold equipment
- Might require modifications for attaching to the factory exhaust on this older chassis
Features:
- 3" Mandrel Bent Tubing — Consistent diameter throughout for maximum exhaust flow
- Revised Design — Compatible with 4L60E and 4L80E transmissions using the factory pan
- Stainless Steel Band Clamps Included
- 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
Vehicle Applications:
Chevrolet & GMC K1500 4WD Truck (1/2 Ton) OBS
- 1988 Chevrolet/GMC K1500 (4WD)
- 1989 Chevrolet/GMC K1500 (4WD)
- 1990 Chevrolet/GMC K1500 (4WD)
- 1991 Chevrolet/GMC K1500 (4WD)
- 1992 Chevrolet/GMC K1500 (4WD)
- 1993 Chevrolet/GMC K1500 (4WD)
- 1994 Chevrolet/GMC K1500 (4WD)
- 1995 Chevrolet/GMC K1500 (4WD)
- 1996 Chevrolet/GMC K1500 (4WD)
- 1997 Chevrolet/GMC K1500 (4WD)
- 1998 Chevrolet/GMC K1500 (4WD)
FAQ
Will this Y-pipe work with my factory exhaust manifolds?
No. This Y-pipe is designed for use with Speed Engineering longtube headers only and is not compatible with factory exhaust manifold equipment.
Will this Y-pipe bolt right up to the factory exhaust?
It might require modifications for proper attachment to the factory exhaust system on this older chassis.
Does this Y-pipe work with my transmission?
Yes. This revised Y-pipe design works with both 4L60E and 4L80E transmissions using the factory pan.
Does this fit a 2WD C1500?
This listing is specific to the 4WD K1500. Fitment for a 2WD application should be confirmed with Speed Engineering before ordering.
What size tubing does this Y-pipe use?
3" diameter, mandrel bent for consistent flow throughout. Stainless steel band clamps are included for installation.
What material is this Y-pipe made from?
304 natural stainless steel with mandrel-bent tubing and TIG-welded construction.
Is this Y-pipe street legal?
No. This is a race-only product intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).
⚠️ Race Use Only: This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).
