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Catalytic Converter for 1999 GMC Sierra 1500

We have 32 Items In-stock.

Evan Fischer Catalytic Converter

Evan Fischer Catalytic Converter, Front, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
Evan Fischer Catalytic Converter Evan Fischer Catalytic Converter
$271.46 List Price $320.32 Save $48.86 Availability: In Stock
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  • SKU#: REPG960301
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 50.5 in. overall length
  • Inlet Type: Single (3-bolt welded flange)
  • Outlet Type: Single (2-bolt spinner flange)
  • Warranty: 5-year or 50,000-mile limited warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SLE, SLT, SL
  • 8 Cyl 4.8L | SLT, SLE, SL
  • 8 Cyl 5.3L | SLE, SLT, SL
Rating: (see review/s)

"Excellent customer service on time delivery. Great overall" posted by: on July 21, 2014 view all 1 reviews

Eastern Catalytic Converter

Eastern Catalytic Converter, Eastern ECO II, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
Eastern Catalytic Converter Eastern Catalytic Converter
$68.02 List Price $156.23 Save $88.21 Availability: In Stock
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  • SKU#: EAST83166
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 10 in. L x 6 in. W x 4.25 in. H, 14 in. overall length
  • Replaces OE Number: 18450-16520
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SL, SLE, SLT
  • 8 Cyl 4.8L | SL, SLT, SLE
  • 8 Cyl 5.3L | SL, SLE, SLT
Rating: (see review/s)

"Converters were deliver a day early around a holiday. Matched up great. Fixed the problem we were having." posted by: vachick73 on January 21, 2015 view all 9 reviews

Eastern Catalytic Converter, Eastern ECO II, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
Eastern Catalytic Converter Eastern Catalytic Converter
$341.38 List Price $850.07 Save $508.69 Availability: In Stock
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  • SKU#: EAST50366
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 46 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SL, SLE, SLT
  • 8 Cyl 4.8L | SL, SLT, SLE
  • 8 Cyl 5.3L | SL, SLE, SLT
Rating: (see review/s)

"the product that I ordered was delivered on time that was promised and all the items were included.the installation was not complicated due to the parts all lining up in place having the part come together where it did made the installation a breeze I was able to avoid removing any cross members etc." posted by: kreid on July 7, 2014 view all 46 reviews

Eastern Catalytic Converter, Eastern ECO CARB, Center, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$149.29 List Price $364.78 Save $215.49 Availability: In Stock
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  • SKU#: EAST640003
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • EO Number: D-665-17
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 8 Cyl 5.3L | SL, SLE, SLT
  • 6 Cyl 4.3L | SL, SLE, SLT
  • 8 Cyl 4.8L | SL, SLE, SLT
Eastern Catalytic Converter, Eastern ECO CARB, Front, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$552.89 List Price $1,390.73 Save $837.84 Availability: In Stock
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  • SKU#: EAST640565
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • EO Number: D-665-18
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SL, SLE, SLT
  • 8 Cyl 4.8L | SL, SLE, SLT
Eastern Catalytic Converter, Eastern ECO CARB, Center, Driver Or Passenger Side, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$155.78 List Price $395.18 Save $239.40 Availability: In Stock
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  • SKU#: EAST640012
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • EO Number: D-665-18
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SL, SLE, SLT
Eastern Catalytic Converter, Eastern ECO CARB, Center, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$155.78 List Price $395.18 Save $239.40 Availability: In Stock
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  • SKU#: EAST640012
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • EO Number: D-665-18
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 8 Cyl 4.8L | SL, SLE, SLT

Magnaflow Catalytic Converter

Magnaflow Catalytic Converter, Magnaflow 49-State Semi-Universal, Driver Or Passenger Side, Traditional Converter
Magnaflow Catalytic Converter Magnaflow Catalytic Converter
$111.97 List Price $144.90 Save $32.93 Availability: In Stock
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  • SKU#: M6699006HM
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 12 in. L x 6.5 in. W, 16 in. overall length
  • Notes: Slip fit Inlet and outlet attachment type
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SLE, SLT, SL
  • 8 Cyl 4.8L | SLT, SLE, SL
  • 8 Cyl 5.3L | SLE, SLT, SL
Magnaflow Catalytic Converter, Magnaflow OEM Grade (49-State) Semi-Universal, Driver Or Passenger Side, Traditional Converter
Magnaflow Catalytic Converter Magnaflow Catalytic Converter
$136.20 List Price $176.25 Save $40.05 Availability: In Stock
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  • SKU#: M6651006
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SLE, SLT, SL
  • 8 Cyl 4.8L | SLT, SLE, SL
  • 8 Cyl 5.3L | SLE, SLT, SL
Magnaflow Catalytic Converter, Magnaflow 49-State Direct Fit, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
Magnaflow Catalytic Converter Magnaflow Catalytic Converter
$483.39 List Price $625.56 Save $142.17 Availability: In Stock
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  • SKU#: M6693419
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Notes: Gaskets Included
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SLE, SLT, SL
  • 8 Cyl 4.8L | SLT, SLE, SL
  • 8 Cyl 5.3L | SLE, SLT, SL
Rating: (see review/s)

"I recommend purchasing this product. Installation was easy parts are good quality. Shipment was fast. Only thing I noticed was small debris inside the tubing." posted by: Rent on April 1, 2014 view all 11 reviews

Magnaflow Catalytic Converter, Magnaflow 50-State Semi-Universal, Driver Or Passenger Side, Traditional Converter
Magnaflow Catalytic Converter Magnaflow Catalytic Converter
$195.89 List Price $253.51 Save $57.62 Availability: In Stock
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  • SKU#: M6645006
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 16 in. overall length
  • EO Number: D-193-66, D-193-91
  • Notes: Inlet/Outlet Size : 2.5in. I.D.
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SL, SLE, SLT
  • 8 Cyl 4.8L | SL, SLE, SLT
  • 8 Cyl 5.3L | SL, SLE, SLT
Rating: (see review/s)

"Had these installed along with two Magnaflow mufflers and the exhaust sounds great, even the engine tem was reduced due to the free flowing exhaust." posted by: on September 4, 2009 view all 1 reviews

Magnaflow Catalytic Converter, Magnaflow 49-State Semi-Universal, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
Magnaflow Catalytic Converter Magnaflow Catalytic Converter
$155.74 List Price $201.54 Save $45.80 Availability: In Stock
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  • SKU#: M6699556HM
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SLE, SLT, SL
  • 8 Cyl 4.8L | SLT, SLE, SL
  • 8 Cyl 5.3L | SLE, SLT, SL
Magnaflow Catalytic Converter, Magnaflow OEM Grade (49-State) Direct Fit, Driver And Passenger Side, Traditional Converter
Magnaflow Catalytic Converter Magnaflow Catalytic Converter
$601.08 List Price $777.87 Save $176.79 Availability: In Stock
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  • SKU#: M6651097
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Notes: Gaskets Included
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SL, SLE, SLT
  • 8 Cyl 4.8L | SL, SLT, SLE
  • 8 Cyl 5.3L | SL, SLE, SLT
Magnaflow Catalytic Converter, Magnaflow 50-State Semi-Universal, Driver Or Passenger Side, Traditional Converter
Magnaflow Catalytic Converter Magnaflow Catalytic Converter
$201.48 List Price $260.73 Save $59.25 Availability: In Stock
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  • SKU#: M66445006
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 16 in. overall length
  • EO Number: D-193-100
  • Notes: Oval body; Inlet/Outlet Size : 2.5in. I.D.
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SL, SLE, SLT
  • 8 Cyl 4.8L | SL, SLE, SLT
  • 8 Cyl 5.3L | SL, SLE, SLT
Magnaflow Catalytic Converter, Magnaflow 50-State Direct-Fit, Traditional Converter, 50-State Legal
Magnaflow Catalytic Converter Magnaflow Catalytic Converter
$831.16 List Price $1,075.62 Save $244.46 Availability: In Stock
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  • SKU#: M66445419
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 37.25 in. overall length
  • EO Number: D-193-100
  • Notes: Gaskets Included
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
see more Fits the following 1999 GMC Sierra 1500 submodels:
  • 6 Cyl 4.3L | SL, SLE, SLT
  • 8 Cyl 4.8L | SL, SLE, SLT
  • 8 Cyl 5.3L | SL, SLE, SLT
Rating: (see review/s)

"Generally speaking the unit is quite similar to the one that was removed. The two piece design makes it easier to install by a small amount than the original one piece unit.A major difference is that the driver side converter unit is round while the new one is oval. This means that the new unit hits interference with the bottom of the vehicle before the flange makes contact at the manifold. There are two choices to make this unit work - grind down part of the flanged section of the converter where the two halves are welded together or remove the heat shield from the vehicle. I am sure the first option will void the warranty.Here is where the second significant problem became apparent. If you look at the unit from the rear the oxygen sensor for the original unit is at about the 10:00 oclock position. The Magnaflow unit connection point for the downstream oxygen sensor is at about 11:00 oclock. This means that the oxygen sensor opening is within about an inch of the heat shield - no way will it fit with the heat shield in place. With the heat shield removed there is just enough clearance for the oxygen sensor IF YOU INSTALL IT BEFORE LIFTING THE CONVERTER ASSEMBLY INTO PLACE. If you choose this option you will have to drop the driver side converter assembly to change a defective downstream oxygen sensor in the future. There is also so little clearance between the top of the oxygen sensor and the bottom of the vehicle that I am concerned that the oxygen sensor wiring will fail by rubbing the bottom of the vehicle at times.Since my son needed the truck I used the Magnaflow unit with the heat shield removed and knowing there will be future issues if we have to replace the oxygen sensor. I installed some protective plastic wire shielding to mitigate this problem and plan to check for wear on the shielding on a regular basis.One disconcerting issue was that when I ordered the unit I mentioned the difference in the shape of the driver side converter in the catalogue picture versus the original unit to the sales representative. I noted that a competitive product showed the round converter chamber on the drivers side. The sales representative spent quite a bit of time to confirm that the Magnaflow unit was a direct fit. When he returned to the phone he said that there would be no problems the catalogue picture was just arepresentation not an exact photo and that the unit I would receive would be EXACTLY like the OEM product.When I discovered the obstruction issue I did contact Magnaflow - their representative said he had never heard of any problems and that their unit was indeed exactly the same as the OEM product. A hint to them that this is not true: if one orders only the converter unit and have someone weld it into the old exhaust piping instead of the whole assembly there are different parts offered for the driver versus passenger side converters. Yet on this complete assembly the converters are identical.In summary I should have ordered the competitive product; it was also a bit less expensive. I selected the Magnaflow because my son said he had heard good reviews about their other products and had not heard of the other company." posted by: none on November 20, 2013 view all 1 reviews