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Choose your trim in My Garage to confirm exact fit.
NGK
Part # 21002
$27.88
Walker Exhaust
Part # 80907
$511.48
Standard Motor Products
Part # FJG101
$8.29
AP Exhaust
Part # M214
$6.05
Eastern Catalytic
Part # 50298
$316.61
Dorman
Part # 03106
$12.84
Walker Exhaust
Part # 15693
$195.52
Walker Exhaust
Part # 31394
$16.88
Eastern Catalytic
Part # 70318
$121.25
Kooks Headers
Part # 7041-S
$80.60
Kooks Headers
Part # 7040-S
$93.13
Walker Exhaust
Part # 31520
$16.67
Kooks Headers
Part # 7034-S
$85.62
Eastern Catalytic
Part # 70857
$244.67
Walker Exhaust
Part # 41970
$18.32
Walker Exhaust
Part # 35183
$12.41
AP Exhaust
Part # H300
$9.10
AP Exhaust
Part # 9234
$15.27
AP Exhaust
Part # 98237
$289.44
AP Exhaust
Part # M212
$6.71
This page groups parts listed for the 1990 GMC G3500. 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 G3500. 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, AP Exhaust, Dorman, Walker Exhaust, and Standard Motor Products, 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.
