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1990 GMC Jimmy Exhaust Manifold Gasket Set 8 Cyl 5.7L Mr Gasket

4 on 3 ratings
  • Features:
    • These Gaskets Are Made From .043 Solid Copper
    • They Have A .051 Embossment Around Port
    • End Holes Are Slotted For Ease Of Installation
  • Mr. Gasket Copper SEAL Header Gaskets are a high quality copper gasket that performs extremely well and are reusable. We recommend this in all racing and high performance applications. They are for stock heads unless indicated, and work well in high heat and turbocharged applications.

Additional Fitment Information:
Vehicle Block CC Engine CID
1990 GMC Jimmy V - 8 Cyl 5.7L 350
19 In Stock
Best Price:

$95.32 USD
$114.38 USD
Brand Mr Gasket
Part # G127153
Condition New
Warehouse B
Mr Gasket

Jimmy Mr Gasket Exhaust Manifold Gasket Set 7153 1990 GMC
  • Square Port Shape; Port Dimensions W-1.45 in. x H-1.55 in.; Medium Square Race Port
  • Copper Seal Exhaust Gasket Set; Square Port Shape; Port Dimensions W-1.45 in. x H-1.55 in.; Medium Square Race Port;
  • Copper Seal Exhaust Gasket Set

    • General

    Gasket Line
    Copper-seal
    WARNING CA Proposition 65
    No
    Port Shape
    Square
    Collector Gaskets Included
    No
    Engine Make/Size
    Chevrolet Small Block Gen I
    Thickness
    0.094 In.
    Port Size
    1.450 In. X 1.550 In.

    Packaging

    package quantity
    1
    length
    0.10 in
    width
    3.60 in
    height
    22.50 in
    weight
    0.80 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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