Emission Systems
Engine Coolant Pipe Gasket
GM
12737098
EGR Cooling Pipes. 6.6L diesel 2017-19 egr valve & related components.
$1.05
MSRP $1.90
Save $0.85
44.7% Off 
Oxygen Sensor
GM
12702181
Silverado, sierra. 4.3l. Upstream. Right. 4.3, 5.3, 6.2L, 4.3L.
$47.95
MSRP $87.18
Save $39.23
45% Off 
Sensor
GM
12747536
Silverado, Sierra 2500 HD. Front. Silverado, Sierra 3500 HD. 6.6L diesel, sensors, 2024-26.
$117.96
MSRP $214.48
Save $96.52
45% Off 
Exhaust Temp Sensor
GM
12737537
6.6L diesel, sensors, at muffler & pipe, posn 3. 6.6L diesel, sensors, 2024-26, exhaust particulate.
$85.38
MSRP $155.24
Save $69.86
45% Off 
Vapor Canister
GM
26334031
Awd. Equinox. 1.5l. Fwd. Terrain. 1.5l.
$139.50
MSRP $253.64
Save $114.14
45% Off 
Exhaust Gas Recirculation (EGR) Valve Cooler Gasket
GM
55490621
Silverado, sierra. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$2.87
MSRP $4.57
Save $1.70
37.2% Off 
Secondary Air Injection Pump with Bracket
GM
12634644
Equinox, Terrain. 2.4L, with pzev. LaCrosse. 2.4l. Helps maintain controlled air flow to proper air injection components
This GM Genuine...
$218.75
MSRP $397.72
Save $178.97
45% Off 
Vapor Canister Vent Valve
GM
12559015
Location-Vapor Canister. Square. All models. 4.3l. Hummer H2. Controls fresh air flow to the canister
Sends fuel vapors to the engine...
$24.39
MSRP $44.34
Save $19.95
45% Off 
Heated Oxygen Sensor
GM
12679885
Silverado, Sierra 2500 HD. Gas. Front. Silverado, Sierra 3500 HD. This part requires programming and/or special setup procedures. GM...
$50.23
MSRP $91.32
Save $41.09
45% Off 
Vapor Canister Purge Tube
GM
12605523
Coupe, 6.2L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$15.97
MSRP $29.04
Save $13.07
45% Off 
Positive Crankcase Ventilation (PCV) Tube
GM
12633396
3.0L & 3.6L, 3.0L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$21.96
MSRP $39.92
Save $17.96
45% Off 
Driver Side Positive Crankcase Ventilation (PCV) Tube
GM
12659515
3.0L twin-turbo, small. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$31.67
MSRP $50.52
Save $18.85
37.3% Off 
Position 2 Exhaust Temperature Sensor
GM
12643373
Express, savana. 6.6l diesel. Position #2. 2010-16, egr valve & related components, at converter & pipe. Helps provide accurate...
$135.56
MSRP $246.46
Save $110.90
45% Off 
Vapor Canister Purge Tube
GM
12630246
Without supercharger. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$33.09
MSRP $60.16
Save $27.07
45% Off 
Secondary Air Injection Pipe Flange Gasket
GM
12589488
2.8L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$1.23
MSRP $1.96
Save $0.73
37.2% Off 
Vapor Canister Purge Tube
GM
12577221
3.7L. 3.5L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$18.56
MSRP $33.74
Save $15.18
45% Off 
Passenger Side Secondary Air Injection Shut-Off and Check Valve
GM
12652895
Right. XTS. Impala. 3.6l. Helps prevent exhaust from entering air pump
This GM Genuine Part is designed, engineered, and tested to...
$183.04
MSRP $332.80
Save $149.76
45% Off 
Exhaust Temperature Sensor
GM
12623113
Helps provide accurate temperature detection
Heat and vibration resistant for operating efficiently
$183.90
MSRP $334.34
Save $150.44
45% Off 
Heated Oxygen Sensor
GM
12612571
Express, savana. Gas. Rear. This part requires programming and/or special setup procedures GM Service Information describes the...
$96.75
MSRP $175.90
Save $79.15
45% Off 
Positive Crankcase Ventilation (PCV) Hose Fitting Seal
GM
12644073
1.5L turbo. Coupe, 2.0L turbo. 2016-18. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by...
$5.59
MSRP $10.16
Save $4.57
45% Off 
Vapor Canister Purge Tube
GM
12607115
6.0 6.2L without supercharged 7.0L. #2. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by...
$12.28
MSRP $22.32
Save $10.04
45% Off 
Black Heated Oxygen Sensor
GM
12568234
This part requires programming and/or special setup procedures GM Service Information describes the procedures and special tools needed...
$63.49
MSRP $115.44
Save $51.95
45% Off 
Positive Crankcase Ventilation Tube
GM
12687544
1.5L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$41.88
MSRP $76.14
Save $34.26
45% Off 
Heated Oxygen Sensor
GM
12599204
Express, savana. Gas. Front. Calif. This part requires programming and/or special setup procedures GM Service Information describes the...
$118.26
MSRP $215.02
Save $96.76
45% Off 
Tube
GM
12728740
5.3 & 6.2L, with police. 5.3 & 6.2L, with ppv.
$9.20
MSRP $16.72
Save $7.52
45% Off 
Positive Crankcase Ventilation Tube
GM
12687311
6.2L without supercharger. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$11.61
MSRP $21.10
Save $9.49
45% Off 
Positive Crankcase Ventilation (PCV) Tube
GM
12581194
3.5L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$9.76
MSRP $15.57
Save $5.81
37.3% Off 
Vapor Canister Purge Tube
GM
12654018
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$7.08
MSRP $11.31
Save $4.23
37.4% Off 
Module
GM
12746285
6.6L diesel, sensors, at exh pipe. 6.6L diesel, sensors, at converter. 6.6L diesel, sensors, 2024-26, #2.
$61.41
MSRP $97.93
Save $36.52
37.3% Off 
Secondary Air Injection Pipe
GM
12648985
3.6L with flex fuel. Helps maintain controlled air flow to proper air injection components
This GM Genuine Part is designed, engineered,...
$177.25
MSRP $322.28
Save $145.03
45% Off 
Heated Oxygen Sensor
GM
12577588
All models. 4.2l. Front. Detects oxygen content in the exhaust gases to help optimize emissions
This GM Genuine Part is designed,...
$68.28
MSRP $124.16
Save $55.88
45% Off 
Heated Oxygen Sensor
GM
12578576
This part requires programming and/or special setup procedures GM Service Information describes the procedures and special tools needed...
$96.75
MSRP $175.90
Save $79.15
45% Off 
By-Pass Hose
GM
12584338
2.0L, #1. 2.0L supercharged, return.
$38.03
MSRP $60.65
Save $22.62
37.3% Off 
Positive Crankcase Ventilation (PCV) Tube
GM
12673862
1.4L, 3 ends. 1.5L turbo. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$45.95
MSRP $83.54
Save $37.59
45% Off 
Secondary Air Injection Pump Bracket
GM
12638137
A.i.r. Pump, 3.6L with pzev. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General...
$59.11
MSRP $94.28
Save $35.17
37.3% Off 
Positive Crankcase Ventilation (PCV) Hose
GM
12643296
2.4L. PCV hose. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$4.72
MSRP $8.58
Save $3.86
45% Off 
EGR Valve
GM
12578040
S-series. 4.3l. Tbi. Astro, Safari. 4.3l. Auto trans. Vin code z. All. Aurora. Seville. G10-30 vans. 7.4l. Modulates the flow of exhaust...
$191.93
MSRP $348.96
Save $157.03
45% Off 
Exhaust Gas Re-Circulation (Egr) Valve Gasket
GM
12570863
Cover Gasket.
$4.18
MSRP $7.61
Save $3.43
45.1% Off 
Air Injection Valve
GM
12567733
Location-A.I.R. Pipes. S-series. Helps prevent exhaust from entering air pump
This GM Genuine Part is designed, engineered, and tested...
$119.93
MSRP $218.06
Save $98.13
45% Off 
Heated Oxygen Sensor
GM
12643707
Canyon, Colorado. 2.5l. Upper. Upstream. Malibu. 2.0l, 2.5l. 2.0L turbo. Regal. 2.0l. 2.4L. This part requires programming and/or...
$44.51
MSRP $68.74
Save $24.23
35.2% Off 
Diesel Emissions Reduction Fluid (DEF) Injector
GM
12647372
Silverado, sierra. Express, savana. 6.6l diesel. 6.6L diesel, emission reduction system, 2015-16. This GM Genuine Part is designed,...
$250.72
MSRP $455.85
Save $205.13
45% Off 
Heated Oxygen Sensor
GM
12608662
Impala, Monte Carlo. 3.5l, 3.9l. G6. Left. Rear. 3.5 & 3.9L with flex fuel. Aura. 3.6l. This part requires programming and/or special...
$69.92
MSRP $127.12
Save $57.20
45% Off 
Air Injection Valve
GM
12619127
California emissions, front. Seville. Helps prevent exhaust from entering air pump
This GM Genuine Part is designed, engineered, and...
$312.87
MSRP $568.86
Save $255.99
45% Off 
Positive Crankcase Ventilation (PCV) Tube
GM
12648746
3.6L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$29.46
MSRP $53.56
Save $24.10
45% Off 
Vapor Canister Purge Tube
GM
12611130
Equinox, Terrain. 2.4l. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$14.87
MSRP $27.04
Save $12.17
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