1999 GMC Sierra 2500 Catalytic Converter
Browse our online catalogue to find original replacement Catalytic Converters specifically designed to fit a 1999 GMC Sierra 2500.

1999 GMC Sierra 2500 Catalytic Converter
$438.75
$259.27
10+ In Stock
Condition: New
Ships: Thursday Feb. 19th
Pick-Up: Ready in 1 Hour Thursday Feb. 19th
Pick-Up: Ready in 1 Hour Thursday Feb. 19th
Right (Passenger Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0); Wheel Base: 364.5cm (143.5in.);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0); Wheel Base: 364.5cm (143.5in.);
Vehicle Fitment Notes:
with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation
with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$478.64
$201.81
10+ In Stock
Condition: New
Ships: Thursday Feb. 19th
Pick-Up: Ready in 1 Hour Thursday Feb. 19th
Pick-Up: Ready in 1 Hour Thursday Feb. 19th
Left (Driver Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation
with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$478.64
$201.81
10+ In Stock
Condition: New
Ships: Thursday Feb. 19th
Pick-Up: Ready in 1 Hour Thursday Feb. 19th
Pick-Up: Ready in 1 Hour Thursday Feb. 19th
Left (Driver Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation
with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$478.64
$201.81
10+ In Stock
Condition: New
Ships: Thursday Feb. 19th
Pick-Up: Ready in 1 Hour Thursday Feb. 19th
Pick-Up: Ready in 1 Hour Thursday Feb. 19th
Right (Passenger Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation
with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$1,263.71
$827.44
In Stock
Condition: New
Ships: Thursday Feb. 19th
Pick-Up: Ready in 1 Hour Thursday Feb. 19th
Pick-Up: Ready in 1 Hour Thursday Feb. 19th
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Federal/California Emissions System Exhaust Gasket is Recommended Additional Part(s) Needed To Complete Installation: 31554 Includes Left Front Gasket Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Direct Fit Type
with Federal/California Emissions System Exhaust Gasket is Recommended Additional Part(s) Needed To Complete Installation: 31554 Includes Left Front Gasket Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Direct Fit Type
1999 GMC Sierra 2500 Catalytic Converter
$452.31
In Stock
Condition: New
Ships: in 1-2 Business Days
Pick-Up: in 1-2 Business Days
Pick-Up: in 1-2 Business Days
Required Per Vehicle: 1
Made in Canada
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0); Region: Canada;
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0); Region: Canada;
Vehicle Fitment Notes:
Driver Side
Driver Side
1999 GMC Sierra 2500 Catalytic Converter
$452.31
In Stock
Condition: New
Ships: in 1-2 Business Days
Pick-Up: in 1-2 Business Days
Pick-Up: in 1-2 Business Days
Required Per Vehicle: 1
Made in Canada
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0); Region: United States;
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0); Region: United States;
Vehicle Fitment Notes:
Driver Side
Driver Side
1999 GMC Sierra 2500 Catalytic Converter
$452.31
In Stock
Condition: New
Ships: in 1-2 Business Days
Pick-Up: in 1-2 Business Days
Pick-Up: in 1-2 Business Days
Left (Driver Side)
Required Per Vehicle: 1
Made in Canada
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0); Region: Canada;
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0); Region: Canada;
Vehicle Fitment Notes:
Driver Side
Driver Side
1999 GMC Sierra 2500 Catalytic Converter
$452.31
In Stock
Condition: New
Ships: in 1-2 Business Days
Pick-Up: in 1-2 Business Days
Pick-Up: in 1-2 Business Days
Left (Driver Side)
Required Per Vehicle: 1
Made in Canada
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0); Region: United States;
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0); Region: United States;
Vehicle Fitment Notes:
Driver Side
Driver Side

1999 GMC Sierra 2500 Catalytic Converter
$511.52
$277.70
Out of Stock
Condition: New
Left (Driver Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
CARB Executive Order D-182-47 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation
CARB Executive Order D-182-47 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$511.52
$277.70
Out of Stock
Condition: New
Right (Passenger Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
CARB Executive Order D-182-47 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation
CARB Executive Order D-182-47 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$2,062.66
$1,119.84
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
CARB Executive Order D-182-52 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Additional part(s) needed to complete installation - 31554 Right Hand Side and 31718 Left Hand Side Direct Fit Type
CARB Executive Order D-182-52 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Additional part(s) needed to complete installation - 31554 Right Hand Side and 31718 Left Hand Side Direct Fit Type

1999 GMC Sierra 2500 Catalytic Converter
$421.05
$250.71
Out of Stock
Condition: New
Left (Driver Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$421.05
$250.71
Out of Stock
Condition: New
Right (Passenger Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$494.84
$286.78
Out of Stock
Condition: New
Left (Driver Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA06.0182 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA06.0182 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$494.84
$286.78
Out of Stock
Condition: New
Left (Driver Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA06.0183 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA06.0183 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$494.84
$286.78
Out of Stock
Condition: New
Right (Passenger Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA06.0182 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA06.0182 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$494.84
$286.78
Out of Stock
Condition: New
Right (Passenger Side)
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA06.0183 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA06.0183 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Universal Type Modifications and/or Additional Parts May Be Required for Installation

1999 GMC Sierra 2500 Catalytic Converter
$1,403.52
$813.41
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Additional part(s) needed to complete installation - 31554 Right Hand Side and 31718 Left Hand Side Direct Fit Type
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Additional part(s) needed to complete installation - 31554 Right Hand Side and 31718 Left Hand Side Direct Fit Type