Emission Systems
Emission Reduction Fluid Tank Filler Pipe
GM
23342406
ACDelco Emission Reduction Fluid Tank Filler Pipe (Part Number: 23342406) is a filler pipe assembly used in emission reduction fluid...
$79.95
MSRP $146.04
Save $66.09
45.3% Off 
Tube
GM
12728740
5.3 & 6.2L, with police. 5.3 & 6.2L, with ppv.
$11.69
MSRP $16.72
Save $5.03
30.1% Off 
Heated Oxygen Sensor
GM
19178924
ACDelco Heated Oxygen Sensor (Part Number: 19178924) is an oxygen sensor that detects oxygen content in exhaust gases to support...
$77.55
MSRP $141.66
Save $64.11
45.3% Off 
Positive Crankcase Ventilation Tube
GM
12687311
ACDelco Positive Crankcase Ventilation Tube (Part Number: 12687311) Type: PCV Tube Function: Carries crankcase vapors from the...
$13.71
MSRP $21.10
Save $7.39
35% Off 
Solenoid Valve
GM
42933353
ACDelco Vapor Canister Vent Valve Solenoid (Part Number: 84524035) controls fresh air flow to the EVAP canister and helps manage fuel...
$24.45
MSRP $41.84
Save $17.39
41.6% Off 
Engine Cooler Seal
GM
55583122
GM Genuine Parts Engine Cooler Seal (Part Number: 55583122) is an EGR cooler seal intended to maintain a leak-free connection between...
$6.77
MSRP $9.04
Save $2.27
25.1% Off 
Heated Oxygen Sensor
GM
12687606
ACDelco Heated Oxygen Sensor (Part Number: 12687606) is a heated upstream oxygen sensor engineered to monitor exhaust oxygen content...
$49.95
MSRP $85.48
Save $35.53
41.6% Off 
Positive Crankcase Ventilation (PCV) Tube
GM
12581194
ACDelco Positive Crankcase Ventilation (PCV) Tube (Part Number: 12581194) is a PCV tube that routes crankcase vapors back into the...
$12.41
MSRP $15.57
Save $3.16
20.3% Off 
Secondary Air Injection Check Valve Kit with Valve, Retainer, Gasket, and Bolts
GM
12632977
ACDelco Secondary Air Injection Check Valve Kit with Valve, Retainer, Gasket, and Bolts (Part Number: 12632977) Category: Emission...
$181.10
MSRP $331.70
Save $150.60
45.4% 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
$9.01
MSRP $11.31
Save $2.30
20.3% Off 
Module
GM
12746285
6.6L diesel, sensors, at exh pipe. 6.6L diesel, sensors, at converter. 6.6L diesel, sensors, 2024-26, #2.
$61.12
MSRP $97.93
Save $36.81
37.6% 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,...
$175.95
MSRP $322.28
Save $146.33
45.4% Off 
Vapor Canister
GM
15112165
ACDelco Vapor Canister (Part Number: 15112165) is an evaporative emissions canister designed to capture fuel vapors and reduce...
$219.29
MSRP $403.86
Save $184.57
45.7% 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,...
$67.96
MSRP $124.16
Save $56.20
45.3% Off 
Heated Oxygen Sensor
GM
12578576
ACDelco Heated Oxygen Sensor (Part Number: 12578576) is an OE-style heated O2 sensor that monitors oxygen content in exhaust gases to...
$96.30
MSRP $175.90
Save $79.60
45.3% Off 
Vapor Canister Vent Valve Solenoid
GM
19207763
ACDelco Vapor Canister Vent Valve Solenoid (Part Number: 19207763) is an emissions control solenoid that regulates fresh air flow to...
$129.38
MSRP $237.42
Save $108.04
45.5% Off 
Fuel Tank Filler Vent Hose
GM
84564116
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$29.11
MSRP $41.52
Save $12.41
29.9% Off 
Black Multi-Purpose Pigtail
GM
13585858
GM Genuine Parts Black Multi-Purpose Pigtail (Part Number: 13585858) is an OEM wiring harness connector pigtail designed for reliable...
$30.47
MSRP $50.88
Save $20.41
40.1% Off 
Exhaust Gas Recirculation Pipe
GM
40009037
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$29.24
MSRP $50.04
Save $20.80
41.6% Off 
By-Pass Hose
GM
12584338
2.0L, #1. 2.0L supercharged, return.
$40.41
MSRP $60.65
Save $20.24
33.4% Off 
Positive Crankcase Ventilation (PCV) Tube
GM
12673862
ACDelco Positive Crankcase Ventilation (PCV) Tube (Part Number: 12673862) is an OE PCV tube that routes crankcase ventilation gases to...
$48.82
MSRP $83.54
Save $34.72
41.6% Off 
Secondary Air Injection Pump Hose
GM
25817029
ACDelco Secondary Air Injection Pump Hose (Part Number: 25817029) is a hose that connects the secondary air injection pump to the...
$32.11
MSRP $54.96
Save $22.85
41.6% 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...
$58.84
MSRP $94.28
Save $35.44
37.6% Off 
Heated Oxygen Sensor
GM
12644786
ACDelco Heated Oxygen Sensor (Part Number: 12644786) is an upstream heated oxygen sensor that detects oxygen content in exhaust gases...
$126.09
MSRP $231.38
Save $105.29
45.5% Off 
Positive Crankcase Ventilation (PCV) Hose
GM
12643296
GM Genuine Parts Positive Crankcase Ventilation (PCV) Hose (Part Number: 12643296) is an OEM replacement hose for the PCV system...
$6.43
MSRP $8.58
Save $2.15
25.1% 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...
$190.52
MSRP $348.96
Save $158.44
45.4% Off 
Air Injection Valve
GM
12567733
ACDelco Air Injection Valve (Part Number: 12567733) is a check/control valve used in the secondary air injection (AIR) system to...
$118.83
MSRP $218.06
Save $99.23
45.5% Off 
Canister Hose
GM
22948012
GM Genuine Parts F (S)Hose (Part Number: 22948012) is an evaporative emissions system hose used to route and contain vapor or purge...
$58.24
MSRP $83.04
Save $24.80
29.9% Off 
Heated Oxygen Sensor
GM
12643707
ACDelco Heated Oxygen Sensor (Part Number: 12643707) is an upstream heated oxygen (O2) sensor that detects oxygen content in exhaust...
$44.51
MSRP $68.74
Save $24.23
35.2% Off 
Oxygen Sensor
GM
19355306
ACDelco Oxygen Sensor (Part Number: 19355306) is a heated oxygen sensor assembly intended to provide accurate air/fuel feedback to...
$65.57
MSRP $119.78
Save $54.21
45.3% Off 
Vapor Canister Solenoid Valve Bracket
GM
84310455
4.3, 5.3, 6.2L. 2.7L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$22.44
MSRP $30.30
Save $7.86
25.9% Off 
Vapor Canister
GM
85158842
XT5. 2.0l. XT6. 2.0l. Blazer. 2.0l.
$290.14
MSRP $481.35
Save $191.21
39.7% Off 
Fuel Tank Vent Hose
GM
84884403
Fuel filler pipe. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$43.41
MSRP $61.90
Save $18.49
29.9% Off 
Evaporative Emissions System Lines
GM
85818014
Rear, convertible.
$111.55
MSRP $204.68
Save $93.13
45.5% Off 
Nitrogen Oxides Sensor
GM
24001918
GM Nitrogen Oxides Sensor (Part Number: 24001918) is an emissions control sensor manufactured to OE specification to detect NOx...
$163.89
MSRP $300.18
Save $136.29
45.4% Off 
Exhaust Gas Recirculation Cooler Temperature Sensor
GM
12677346
ACDelco Exhaust Gas Recirculation Cooler Temperature Sensor (Part Number: 12677346) is an EGR cooler temperature sensor designed to...
$32.87
MSRP $56.26
Save $23.39
41.6% Off 
Diesel Emissions Reduction Fluid (DEF) Injector
GM
12647372
ACDelco Diesel Emissions Reduction Fluid (DEF) Injector (Part Number: 12647372) is an aftermarket emission‑system injector engineered...
$247.52
MSRP $455.85
Save $208.33
45.7% Off 
Vapor Canister
GM
84316430
Malibu. 1.8l. Helps reduce harmful pollutants from entering the atmosphere
Captures fuel vapors to be re-burned in the engine
This GM...
$97.38
MSRP $148.23
Save $50.85
34.3% Off 
Heated Oxygen Sensor
GM
12608662
ACDelco Heated Oxygen Sensor (Part Number: 12608662) is a heated O2 sensor used to detect oxygen content in exhaust gases and support...
$69.59
MSRP $127.12
Save $57.53
45.3% Off 
Air Injection Valve
GM
12619127
ACDelco Air Injection Valve (Part Number: 12619127) Note: Input abbreviations expanded on first mention — Secondary (SECD) and...
$308.88
MSRP $568.86
Save $259.98
45.7% Off 
Vapor Canister Hose
GM
20827320
ACDelco Vapor Canister Hose (Part Number: 20827320, SKU: 20827320 ) is an emission-control hose that routes vapor to and from the...
$79.43
MSRP $145.10
Save $65.67
45.3% Off 
Heated Oxygen Sensor
GM
12645561
ACDelco Heated Oxygen Sensor (Part Number: 12645561) is a heated O2 sensor assembly that measures exhaust oxygen content to support...
$56.16
MSRP $96.10
Save $39.94
41.6% Off 
Positive Crankcase Ventilation (PCV) Tube
GM
12648746
GM Genuine Parts Positive Crankcase Ventilation (PCV) Tube (Part Number: 12648746) is an OE PCV fresh-air tube that routes crankcase...
$31.30
MSRP $53.56
Save $22.26
41.6% Off 
Vapor Canister Vent Hose
GM
84429641
3.6L, without awd, 2nd design. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General...
$60.96
MSRP $111.36
Save $50.40
45.3% Off 
Vapor Canister Air Inlet Hose
GM
84940072
Manufactured to GM OE specification for fit, form, and function
$55.05
MSRP $100.56
Save $45.51
45.3% Off No results found. Here are some helpful search tips:
- Search by a part name. Example: water pump.
- Be less specific. Example: brake instead of ceramic brake.
- Remove information such as make, year or model.
- Can't find the part you are looking for? Contact us and we'll find it for you!