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1990 GMC R2500 Suburban Exhaust Manifold Gasket Set 8 Cyl 5.7L Mr Gasket

4 on 3 ratings
  • Features:
    • High-Temperature Exhaust Material
    • Withstands Extreme Exhaust Heat
    • Provides Excellent Sealing And Durability
    • Superior Tensile Strength
    • Resists Deteriorating
    • Provides Excellent Torque Retention
  • Manufactured from high-temperature composite exhaust material. Provides maximum torque retention to eliminate gasket failure. Can be trimmed if necessary for modified port applications. Precision die cut for an excellent fit. For OE replacement, high-performance street, drag race and oval track.

Additional Fitment Information:
Vehicle Block CC Engine CID
1990 GMC R2500 Suburban V - 8 Cyl 5.7L 350
Brand Mr Gasket
Part # G12150
Condition New
Warehouse B
Mr Gasket

R2500 Suburban Mr Gasket Exhaust Manifold Gasket Set 150 1990 GMC
  • Round Port Shape; Port Diameter 1.63 in.
  • Exhaust Gasket Set; Round Port Shape; Port Diameter 1.63 in.;
  • Exhaust Gasket Set

    • General

    Gasket Line
    Performance
    WARNING CA Proposition 65
    No
    Port Shape
    Round
    Collector Gaskets Included
    No
    Engine Make/Size
    Chevrolet Small Block Gen I
    Thickness
    0.062 In.
    Port Size
    1.630 In.

    Packaging

    package quantity
    1
    length
    0.20 in
    width
    2.50 in
    height
    19.90 in
    weight
    0.27 lb
    Information on technical characteristics, the delivery set, the country of manufacture and the appearance of the goods is for reference only and is based on the latest information available at the time of publication.
    1. Jimmy Stewart
      05 Aug, 2014
      Excellent update for 'gasketless' GM TBI small-blocks - proper port match. Don't forget to replace the old manifold bolts, as they won't hold torque after years of hot/cold cycling.
    2. Tom C
      04 Jun, 2013
      These are beautiful gaskets. I am thinking about getting an extra set to mount on the wall in my ManCave. I expect my rating will go up after the engine is reinstalled and running again.
    3. Bloose
      10 Oct, 2011
      When I first installed these I had a leak on the passenger side header. When I puller the header I found that the gasket didn't cover part of the header flange. In reality the problem was more with the header than the gasket but the gasket is also somewhat at fault. The reason I say this is because the gasket port size is a good bit larger than the port on the head. If they offered different gaskets for different part sizes you could likely get a better fit. I.E. one gasket for stock ports, one for larger ports, etc. Much as they do for Ford and Chevy. In the end though I cut the gasket into separate pieces for each port section. I then elongated the holes for the offending port and got it to match the header flange. No more leaks and is holding up well at 3500 miles.B

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