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JEGS Off-Road Y-Pipe for GM

JEGS 31004

555-31004

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JEGS Off-Road Y-Pipe for GM $189.99
Off-Road Y-Pipe
  • 1998-2002 Silverado/Sierra C/K1500 & 1/2 ton 4.3L
  • 1999-2000 Silverado/Sierra C/K1500 & 1/2 ton 4.8L/5.3L
  • Except CA
  • 2-1/2" Inlet to 3" Outlet
  • Aluminized Steel

  • JEGS 31004 Details

    GM

    • Fits all with OE 2-3/4" single flat flange exhaust after dual converters only EXCEPT 2000-2002 OE y-pipe systems with flat spot after driver's side O2 sensor and just before the y-junction
    • 2-1/2" inlets and 3" single flat flange outlet will accomodate use of factory 2-3/4" exhaust or aftermarket 3" system.

    JEGS Y-Pipes provide maximum exhaust flow for off-road truck use. These fit directly from the manifold to the stock cat-back exhaust for all 2WD/4WD applications and wheel bases. Constructed from mandrel-bent 16-gauge aluminized tubing or 409 stainless steel, the pipes include flanges, gaskets, oxygen sensor bungs and plugs, and exhaust clamps. A JEGS cat-back exhaust system is recommended to receive the full benefit of the increased exhaust flow. Catalytic converter(s), sold separately, can be added for street-legal use, yet some modifications will be required.

    Does JEGS 31004 fit your vehicle?

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    1999 CHEVROLET C1500 PICKUP

    • Liter: 5.0
    • SubModel: LS
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1999 GMC K1500 PICKUP

    • Liter: 5.0
    • SubModel: SIERRA SL
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1999 GMC C1500 PICKUP

    • Liter: 5.0
    • SubModel: SIERRA SL
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1999 CHEVROLET K1500 PICKUP

    • Liter: 5.0
    • SubModel: LS
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1998 GMC K1500

    • Liter: 4.3
    • SubModel: SIERRA
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1998 CHEVROLET K1500 PICKUP

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1998 CHEVROLET C1500 PICKUP

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1998 GMC K1500

    • Liter: 4.3
    • SubModel: SIERRA XC
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1998 GMC C1500

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )
    31004 - JEGS Off-Road Y-Pipes for Trucks is rated 3.5 out of 5 by 8.
    Rated 5 out of 5 by from Great Quality Bought this for a 95 Chevy K1500 with a 5.3 swap running stock manifolds. Lined up perfectly on it, flanges were good, o2 bungs were good, welds were good.
    Date published: 2017-12-10
    Rated 5 out of 5 by from Perfect Got this for a twin turbo build on my 2003 Silverado and it fit perfectly.
    Date published: 2016-10-29
    Rated 5 out of 5 by from great product I've used this y-pipe on several GM trucks, it's easier and cheaper than having a local muffler shop cut the cats out of a factory y-pipe.
    Date published: 2014-12-26
    Rated 4 out of 5 by from fits great on my 06 4x4 Nice flanges and bends, but do yourself a favor and order a 2.5" band clamp or just weld the crossover pipe. Don't even try to use the u clamp or it will just cause an exhaust leak.
    Date published: 2017-08-29
    Rated 2 out of 5 by from Comes up a little short. Bought this for my 02 Suburban with shortie headers to accommodate my 6 inch lift because long tubes would not work. Good thing its a 2 piece assembly because it came up really short on the width in the center. Had to put a spacer tube in the middle of it to make it work.
    Date published: 2017-08-04
    Rated 1 out of 5 by from Does not properly fit Put this on my 01 Silverado and it does not fit right. The crossover barely connects because the passanger side of the exhaust sticks out too far to the right. Because of that, the rear flange for the cat-back connect is not lined up right. On top of that, that flange was made too small, and does not properly mate with the factory cat-back.
    Date published: 2017-12-04
    Rated 1 out of 5 by from Looks nice Bought it to replace my y-pipe and got it bolted on and it did not fit my truck like the listing says. Leaked out of the 3 bolt welded flange side, hit my transmission on the passenger side and the 2 bolt flange at the collector was not deep enough to seat properly with the rest of the exhaust. Do not recommend buying on.
    Date published: 2017-08-17
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    Will this fit my 2000 5.3 Silverado?

    Asked by: Cominus
    This is not designed to fit your application.
    Answered by: Rusty B
    Date published: 2018-04-12

    Will this fit a 2004 tahoe 5.3 looks exactly the same

    Asked by: Jonjonm22
    This is not designed for your application.
    Answered by: Rusty B
    Date published: 2018-03-21
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    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations