Emission Systems
Positive Crankcase Ventilation (PCV) Hose Fitting Seal
GM
12644073
ACDelco Positive Crankcase Ventilation (PCV) Hose Fitting Seal (Part Number: 12644073) is an OE sealing O-ring for PCV hose fittings...
$6.10
MSRP $10.16
Save $4.06
40% Off 
Diesel Emissions Fluid (DEF) Tank Reservoir Wiring Harness
GM
84113571
GM Genuine Parts Diesel Emissions Fluid (DEF) Tank Reservoir Wiring Harness (Part Number: 84113571) is a wiring harness for the DEF...
$54.40
MSRP $95.44
Save $41.04
43% Off 
Vapor Canister Air Inlet Hose
GM
84025035
Without awd, 1st design. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$55.96
MSRP $81.82
Save $25.86
31.6% Off 
Engine Mount Vacuum Hose
GM
23234892
GM Genuine Parts Engine Mount Vacuum Hose (Part Number: 23234892) is an engine component hose used in vacuum/engine-mount systems....
$94.51
MSRP $149.36
Save $54.85
36.7% Off 
Vapor Canister Purge Tube
GM
12607115
ACDelco Vapor Canister Purge Tube (Part Number: 12607115) is an EVAP purge tube that routes fuel vapor from the canister to the purge...
$13.39
MSRP $22.32
Save $8.93
40% Off 
Exhaust Gas Recirculation (EGR) Valve Kit with Gasket
GM
19210654
ACDelco Exhaust Gas Recirculation (EGR) Valve Kit with Gasket (Part Number: 19210654) is an EGR valve kit that controls exhaust-gas...
$108.39
MSRP $195.30
Save $86.91
44.5% Off 
Black Heated Oxygen Sensor
GM
12568234
ACDelco Black Heated Oxygen Sensor (Part Number: 12568234) is a heated oxygen sensor that measures oxygen content in exhaust gases to...
$64.07
MSRP $115.44
Save $51.37
44.5% Off 
Secondary Air Injection Pump with Bracket
GM
55569076
ACDelco Secondary Air Injection Pump with Bracket (Part Number: 55569076) is an emission-control pump assembly designed to supply...
$184.43
MSRP $336.86
Save $152.43
45.3% Off 
Nitrogen Oxide Sensor with Clips
GM
19330002
ACDelco Nitrogen Oxide Sensor with Clips (Part Number: 19330002) is a NOx sensor kit that detects nitrogen oxide content in exhaust...
$215.20
MSRP $393.06
Save $177.86
45.3% Off 
Emission Reduction Fluid Tank Filler Pipe
GM
84721353
ACDelco Emission Reduction Fluid Tank Filler Pipe (Part Number: 84721353) is a filler-pipe assembly manufactured to GM OE...
$72.73
MSRP $131.04
Save $58.31
44.5% Off 
Heated Oxygen Sensor
GM
55574136
ACDelco Heated Oxygen Sensor (Part Number: 55574136) is an upstream heated O2 sensor used to measure oxygen content in exhaust gases...
$50.06
MSRP $87.82
Save $37.76
43% Off 
Vapor Canister Vent Solenoid
GM
22840971
GM Genuine Parts Vapor Canister Vent Solenoid (Part Number: 22840971) is an evaporative emissions canister vent solenoid that controls...
$88.69
MSRP $159.80
Save $71.11
44.5% Off 
Positive Crankcase Ventilation Tube
GM
12687544
ACDelco Positive Crankcase Ventilation Tube (Part Number: 12687544) is a replacement tube for the Positive Crankcase Ventilation (PCV)...
$43.40
MSRP $76.14
Save $32.74
43% Off 
Secondary Air Injection Pump
GM
90542305
Catera. Helps maintain controlled air flow to proper air injection components
$122.10
MSRP $223.02
Save $100.92
45.3% Off 
Heated Oxygen Sensor
GM
12599204
ACDelco Heated Oxygen Sensor (Part Number: 12599204) is a heated oxygen sensor assembly that detects oxygen content in exhaust gases...
$117.72
MSRP $215.02
Save $97.30
45.3% Off 
Reductant Fluid Injector
GM
55515114
ACDelco Reductant Fluid Injector (Part Number: 55515114) is an injector for selective catalytic reduction (SCR) reductant fluid...
$68.01
MSRP $122.54
Save $54.53
44.5% Off 
Fluid Pipe
GM
85693477
3.0L diesel emission reduction system.
$121.59
MSRP $222.09
Save $100.50
45.3% Off 
Vapor Canister Purge Pump Bracket
GM
55501918
2.0L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$15.82
MSRP $21.96
Save $6.14
28% Off 
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...
$81.05
MSRP $146.04
Save $64.99
44.5% Off 
Tube
GM
12728740
5.3 & 6.2L, with police. 5.3 & 6.2L, with ppv.
$10.03
MSRP $16.72
Save $6.69
40% 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...
$78.62
MSRP $141.66
Save $63.04
44.5% Off 
Positive Crankcase Ventilation Tube
GM
12687311
ACDelco Positive Crankcase Ventilation Tube (Part Number: 12687311) Type: PCV Tube Function: Carries crankcase vapors from the...
$12.66
MSRP $21.10
Save $8.44
40% 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...
$23.85
MSRP $41.84
Save $17.99
43% 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...
$5.42
MSRP $9.04
Save $3.62
40% 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...
$48.72
MSRP $85.48
Save $36.76
43% 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...
$10.64
MSRP $15.57
Save $4.93
31.7% 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...
$181.61
MSRP $331.70
Save $150.09
45.2% 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
$7.73
MSRP $11.31
Save $3.58
31.7% Off 
Module
GM
12746285
6.6L diesel, sensors, at exh pipe. 6.6L diesel, sensors, at converter. 6.6L diesel, sensors, 2024-26, #2.
$61.97
MSRP $97.93
Save $35.96
36.7% 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,...
$176.45
MSRP $322.28
Save $145.83
45.2% Off 
Vapor Canister
GM
15112165
ACDelco Vapor Canister (Part Number: 15112165) is an evaporative emissions canister designed to capture fuel vapors and reduce...
$221.11
MSRP $403.86
Save $182.75
45.3% 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,...
$68.90
MSRP $124.16
Save $55.26
44.5% 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...
$97.62
MSRP $175.90
Save $78.28
44.5% 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...
$129.99
MSRP $237.42
Save $107.43
45.2% 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
$28.40
MSRP $41.52
Save $13.12
31.6% Off 
F (S)Canister
GM
42894755
GM Genuine Parts Vapor Canister (Part Number: 84944778) is an evaporative emissions control canister that collects and stores fuel...
$163.45
MSRP $298.54
Save $135.09
45.3% 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...
$29.72
MSRP $50.88
Save $21.16
41.6% 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
$28.52
MSRP $50.04
Save $21.52
43% Off 
By-Pass Hose
GM
12584338
2.0L, #1. 2.0L supercharged, return.
$39.41
MSRP $60.65
Save $21.24
35% 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...
$47.62
MSRP $83.54
Save $35.92
43% 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...
$31.33
MSRP $54.96
Save $23.63
43% 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...
$59.65
MSRP $94.28
Save $34.63
36.7% 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...
$126.68
MSRP $231.38
Save $104.70
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!