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Choose your trim in My Garage to confirm exact fit.
Exact-fit parts for the 1990 GMC R3500 SLE.
NGK
Part # 21002
$27.88
Walker Exhaust
Part # 35940
$7.93
Kooks Headers
Part # 7034-SP-2
$116.45
Reinz
Part # 71-13616-00
$19.33
Kooks Headers
Part # 7041-250
$55.80
Reinz
Part # 71-14650-00
$7.40
Kooks Headers
Part # 7031-FB
$38.82
Kooks Headers
Part # 7035
$58.02
Reinz
Part # 71-13649-00
$13.09
Dorman
Part # 926-900
$16.41
Showing 41-50 of 50
This page groups parts listed for the 1990 GMC R3500 SLE. Some products fit every trim, while others depend on submodel, engine, drivetrain, or brake package. Use your trim in My Garage or the product page fitment check to confirm exact fit.
We offer a wide selection of exhaust systems parts for the 1990 GMC R3500 SLE. This page narrows the catalog to the year, make, and model; use your trim on product pages to confirm exact fit when a part only fits certain submodels.
We carry parts from trusted brands including Kooks Headers, Standard Motor Products, Walker Exhaust, AP Exhaust, and Dorman, plus many more. Filter by brand to find your preferred manufacturer.
Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.
Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.
