How to replace the Air Inject Check Valve on Cadillac DTS?

A mechanic must start the air check valve replacement by removing the fuel injector sight shield. First disconnect the engine harness electrical connector from both the air check valve and the air pipe quick connect fitting from the same valve. You should start by removing the air check valve to exhaust manifold nuts together with air check valve bolts before pulling the air check valve out. Eliminate the exhaust manifold gasket from the air check valve while cleaning all sealing areas. You should install a new air check valve to exhaust manifold gasket before securing the air check valve into position. Use 9 n.m torque (80 lb in) to fix the exhaust manifold nuts to the air check valve after which install the air check valve bolts while maintaining them at 9 n.m torque. Begin the process by connecting the air pipe quick connect fitting to the air check valve and the engine harness electrical connector to the air check valve followed by replacement of the fuel injector sight shield.

How to replace the Air Inject Check Valve on Bank 1 on Cadillac DeVille?

As a first step for fixing the bank 1 secondary air injection (AIR) shut-off valve you must disconnect the electrical connector from the valve. Loosen the nut connecting the intermediate hose to the air shut-off valve before separate hose removal. The first operation involves removing the 2 nuts keeping the Exhaust Manifold outlet pipe attached to its position while the second step requires the removal of the 3 bolts that secure the air shut-off valve to the cam cover. Remove the air shut-off valve while discarding the gasket and also remove the outlet pipe and bracket from the engine compartment. Unfasten the 2 outlet pipe and bracket retaining nuts securing them to the air shut-off valve before discarding the gasket. New air shut-off valve assembly must be positioned with its new outlet pipe gasket fitted to the outlet pipe before installing two nuts to fasten the outlet pipe along with its bracket to the air shut-off valve unit while maintaining a torque of 9 n.m (80 lb in). Install the new gasket on the outlet pipe Exhaust Manifold before mounting the air shut-off valve bracket combination on the cam cover and Exhaust Manifold. First tighten the 3 bolts that connect the air shut-off valve to the cam cover at 9 n.m (80 lb in), install the 2 Exhaust Manifold securing nuts which also require a torque of 9 n.m (80 lb in). The procedure continues with the installation of the intermediate hose onto the air shut-off valve followed by nut retention at 9 n.m (80 lb in). The last step includes connector application to the air shut-off valve.

OEM Cadillac Air Inject Check Valve

Air Injection Reaction Check Valve

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34 Air Inject Check Valves found

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Cadillac Boost Sensor Part Number: 12702113
$30.84 MSRP: $48.97
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Product Specifications
- Other Name: Solenoid, Turbocharger Boost Control Valves; Wastegate Solenoid; Intake Manifold Runner Control; MAP Sensor; By-Pass Valve; By-Pass Control Valve; Solenoid; Valve, Turbocharger/Supercharger Cooling
- Replaces: 55496241
Fits the following Cadillac Models:
- CT4 | 2020-2022 | Luxury, Premium Luxury, Sport | 4 Cyl 2.0 L GAS
- CT5 | 2020-2022 | Luxury, Premium Luxury, Sport, V | 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS
- XT4 | 2019-2024 | Luxury, Premium Luxury, Sport | 4 Cyl 2.0 L GAS
- XT5 | 2020-2023 | Luxury, Premium Luxury | 4 Cyl 2.0 L GAS
- XT6 | 2021-2024 | Luxury | 4 Cyl 2.0 L GAS
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Cadillac Check Valve Part Number: 55581479
$139.23 MSRP: $229.33
You Save: $90.10 (40%)
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Product Specifications
- Other Name: Valve Assembly-Secondary Air Injection Check; Diverter Valve; Valve, Emission Control System
Fits the following Cadillac Models:
- ELR | 2014-2015 | Base | 4 Cyl 1.4 L PLUG-IN HYBRID EV-GAS (PHEV)
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Cadillac Diverter Valve Part Number: 17075280
$190.25 MSRP: $513.83
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Product Specifications
- Other Name: Valve Air, Emission Control System; Secondary Air Injection Check Valve
Fits the following Cadillac Models:
- DeVille | 1985-1986 | Base, Cabriolet, d'Elegance, Touring | 8 Cyl 4.1 L GAS
- Fleetwood | 1985-1986 | 75, 75 Formal, Base, Brougham, Brougham d'Elegance, d'Elegance | 8 Cyl 4.1 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
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Cadillac Check Valve Part Number: 12562568
Product Specifications
- Other Name: Valve Assembly-Secondary Air Injection Check; Secondary Air Injection Check Valve; Solenoid; Valve, Emission Control System
- Replaces: 22040897
Fits the following Cadillac Models:
- Fleetwood | 1990, 1984 | 60 Special, Formal | 8 Cyl 4.5 L GAS, 8 Cyl 6.0 L GAS
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Cadillac Check Valve Part Number: 12565503
$113.21 MSRP: $203.06
You Save: $89.85 (45%)
Product Specifications
- Other Name: Valve Assembly-Secondary Air Injection Check; Secondary Air Injection Check Valve; Diverter Valve; Air Valve; A.I.R. Pipe; Emission Control System Valves (Air Injector Reactor, ECM Components, EGR Control)
- Replaces: 22040805, 22048212
Fits the following Cadillac Models:
- Fleetwood | 1994-1996 | Base, Brougham | 8 Cyl 5.7 L GAS
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Cadillac Vacuum Solenoid Part Number: 90466214
Product Specifications
- Other Name: Valve, Air Cleaner Controls; Control Solenoid; By-Pass Valve; Valve, Engine Fuel Intake Manifold; Valve, Emission Control System
Fits the following Cadillac Models:
- CTS | 2003-2004 | Base, Luxury, Luxury Sport | 6 Cyl 3.2 L GAS
- Catera | 1997-2001 | Base, Sport | 6 Cyl 3.0 L GAS
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Cadillac Diverter Valve Part Number: 17072997
Product Specifications
- Other Name: Valve Air, Emission Control System; Secondary Air Injection Check Valve; Valve, Emission Control System
Fits the following Cadillac Models:
- Eldorado | 1984 | Base, Biarritz, Cabriolet, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 5.7 L DIESEL
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Cadillac Diverter Valve Part Number: 17087302
Product Specifications
- Other Name: Valve, Emission Control System; Secondary Air Injection Check Valve; Air Control Valve
Fits the following Cadillac Models:
- Allante | 1987-1988 | Base | 8 Cyl 4.1 L GAS
- Eldorado | 1987 | Base, Biarritz | 8 Cyl 4.1 L GAS
- Seville | 1987 | Base | 8 Cyl 4.1 L GAS
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Cadillac Diverter Valve Part Number: 12332748
Product Specifications
- Other Name: Valve-Air; Secondary Air Injection Check Valve; Valve, Emission Control System
Fits the following Cadillac Models:
- Allante | 1987-1988 | Base | 8 Cyl 4.1 L GAS
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Cadillac Check Valve Part Number: 22040899
Product Specifications
- Other Name: Valve Assembly-Air Injector Check; Secondary Air Injection Check Valve; Diverter Valve; Valve, Emission Control System
Fits the following Cadillac Models:
- Allante | 1987-1988 | Base | 8 Cyl 4.1 L GAS
- Brougham | 1987-1990 | Base, d'Elegance | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
- DeVille | 1984-1990 | Base, Cabriolet, d'Elegance, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 4.5 L GAS
- Eldorado | 1986-1990 | Base, Biarritz, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 4.5 L GAS
- Fleetwood | 1984-1990 | 60 Special, 75, 75 Formal, Base, Brougham, Brougham d'Elegance, d'Elegance, Formal | 8 Cyl 4.1 L GAS, 8 Cyl 4.5 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL, 8 Cyl 6.0 L GAS
- Seville | 1984-1990 | Base, Elegante, STS | 8 Cyl 4.1 L GAS, 8 Cyl 4.5 L GAS, 8 Cyl 5.7 L DIESEL
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Cadillac Check Valve Part Number: 22050642
Product Specifications
- Other Name: Valve, Emission Control System; Secondary Air Injection Check Valve; Diverter Valve; Valve, Emission Control System (ECM, EGR Components, Valves)
- Replaces: 22099019
Fits the following Cadillac Models:
- Eldorado | 1984 | Base, Biarritz, Cabriolet, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 5.7 L DIESEL
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Cadillac By-Pass Valve Part Number: 90542304
Product Specifications
- Other Name: Valve, Emission Control System; Secondary Air Injection Check Valve
Fits the following Cadillac Models:
- Catera | 1997-1998 | Base | 6 Cyl 3.0 L GAS
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Cadillac Diverter Valve Part Number: 17071540
Product Specifications
- Other Name: Valve Air, Emission Control System; Secondary Air Injection Check Valve; Valve, Emission Control System
Fits the following Cadillac Models:
- Fleetwood | 1984 | Formal | 8 Cyl 6.0 L GAS
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Cadillac Diverter Valve Part Number: 17086010
Product Specifications
- Other Name: Valve, Emission Control System; Secondary Air Injection Check Valve; Air Control Valve
Fits the following Cadillac Models:
- Eldorado | 1986 | Base, Biarritz | 8 Cyl 4.1 L GAS
- Seville | 1986 | Base, Elegante | 8 Cyl 4.1 L GAS
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Cadillac Diverter Valve Part Number: 17075081
Product Specifications
- Other Name: Valve, Emission Control System; Secondary Air Injection Check Valve
Fits the following Cadillac Models:
- Eldorado | 1984-1985 | Base, Biarritz, Cabriolet, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 5.7 L DIESEL
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Cadillac Check Valve Part Number: 12557976
Product Specifications
- Other Name: Valve Assembly-Secondary Air Injection Check; Diverter Valve; Valve, Emission Control System
Fits the following Cadillac Models:
- DeVille | 2000 | Base, DHS, DTS | 8 Cyl 4.6 L GAS
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Cadillac Check Valve Part Number: 12568136
Product Specifications
- Other Name: Valve Assembly-Secondary Air Injection Check; Diverter Valve; Valve, Emission Control System
Fits the following Cadillac Models:
- DeVille | 2001-2003 | Base, DHS, DTS | 8 Cyl 4.6 L GAS
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Cadillac Diverter Valve Part Number: 17071106
Product Specifications
- Other Name: Valve Air, Emission Control System; Secondary Air Injection Check Valve; Valve, Emission Control System
Fits the following Cadillac Models:
- DeVille | 1984 | Base, Cabriolet, d'Elegance | 8 Cyl 4.1 L GAS
- Fleetwood | 1984 | Brougham, Brougham d'Elegance, Formal | 8 Cyl 4.1 L GAS, 8 Cyl 6.0 L GAS
- Seville | 1984 | Base, Elegante | 8 Cyl 4.1 L GAS, 8 Cyl 5.7 L DIESEL
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Cadillac Check Valve Part Number: 12559826
Product Specifications
- Other Name: Valve Assembly-Secondary Air Injection Check; Diverter Valve; Valve, Emission Control System
Fits the following Cadillac Models:
- DeVille | 2000-2004 | Base, DHS, DTS, Protection Series | 8 Cyl 4.6 L GAS
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Cadillac Diverter Valve Part Number: 17087225
Product Specifications
- Other Name: Valve, Emission Control System; Secondary Air Injection Check Valve; Air Control Valve
Fits the following Cadillac Models:
- Brougham | 1987-1989 | Base, d'Elegance | 8 Cyl 5.0 L GAS
- DeVille | 1987-1989 | Base, d'Elegance, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 4.5 L GAS
- Eldorado | 1988-1990 | Base, Biarritz, Touring | 8 Cyl 4.5 L GAS
- Fleetwood | 1987-1989 | 60 Special, 75, 75 Formal, Base, d'Elegance | 8 Cyl 4.1 L GAS, 8 Cyl 4.5 L GAS
- Seville | 1988-1989 | Base, STS | 8 Cyl 4.5 L GAS
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Cadillac Air Inject Check Valve

Choose OEM Air Inject Check Valve, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with Cadillac's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM Cadillac Air Inject Check Valve. You can shop at highly competitive prices and protect your budget. All our genuine Cadillac parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

Cadillac Air Inject Check Valve injects fresh air into the exhaust stream, cutting emissions and increasing efficiency. First launched in 1902, the brand continues to punch far above its weight with bold fashion that catches the eye. The drivers are encircled by an interior with soft leather, clear displays and intelligent controls that react unobtrusively. Road etiquette is strained but relaxed and allows long highways to pass by almost without a spasmodic twitch. Cadillac continues to release technology such as hands-free driving assistance and a glass-roofed completely electric flagship that appears to be of the future. Heritage remains itself but does not drag it down. Every badge is an indicator of a combination of tradition and fresh juice. All showrooms are muttering about the performance, although Cadillac prices tend to be in the lower range than its competitors in the luxury brand, and the badge does not seem a symbol of luxurious wastefulness. Drivers are not sold, but they feel that they are seen. The Air Inject Check Valve is installed between the pump and the exhaust manifold where it admits fresh oxygen only when it is favorable to the flow. That burst of air triggers the remnants of fuel that remain, blows down hydrocarbon and carbon monoxide and maintains oxygen sensors clean to allow the computer to aggressively tune the engine to power. Exhaust pulses attempting to reverse are blocked by snapping the Air Inject Check Valve shut in a matter of milliseconds before the hot gases can burn the pump and the hoses. Constructed of stainless guts and heat resistant seals, the Air Inject Check Valve can endure the vicious under-hood heat and is insensitive to corrosive condensate through many miles. Cadillac has a philosophy of mixing opulence with mechanical rudeness that such resilience suits.

Cadillac Air Inject Check Valve Parts and Q&A

Check Valve
12619111
Q: How to replace the Air Inject Check Valve on Cadillac DTS?
A:
A mechanic must start the air check valve replacement by removing the fuel injector sight shield. First disconnect the engine harness electrical connector from both the air check valve and the air pipe quick connect fitting from the same valve. You should start by removing the air check valve to exhaust manifold nuts together with air check valve bolts before pulling the air check valve out. Eliminate the exhaust manifold gasket from the air check valve while cleaning all sealing areas. You should install a new air check valve to exhaust manifold gasket before securing the air check valve into position. Use 9 n.m torque (80 lb in) to fix the exhaust manifold nuts to the air check valve after which install the air check valve bolts while maintaining them at 9 n.m torque. Begin the process by connecting the air pipe quick connect fitting to the air check valve and the engine harness electrical connector to the air check valve followed by replacement of the fuel injector sight shield.
Check Valve
12619127
Q: How to replace the Air Inject Check Valve on Bank 1 on Cadillac DeVille?
A:
As a first step for fixing the bank 1 secondary air injection (AIR) shut-off valve you must disconnect the electrical connector from the valve. Loosen the nut connecting the intermediate hose to the air shut-off valve before separate hose removal. The first operation involves removing the 2 nuts keeping the Exhaust Manifold outlet pipe attached to its position while the second step requires the removal of the 3 bolts that secure the air shut-off valve to the cam cover. Remove the air shut-off valve while discarding the gasket and also remove the outlet pipe and bracket from the engine compartment. Unfasten the 2 outlet pipe and bracket retaining nuts securing them to the air shut-off valve before discarding the gasket. New air shut-off valve assembly must be positioned with its new outlet pipe gasket fitted to the outlet pipe before installing two nuts to fasten the outlet pipe along with its bracket to the air shut-off valve unit while maintaining a torque of 9 n.m (80 lb in). Install the new gasket on the outlet pipe Exhaust Manifold before mounting the air shut-off valve bracket combination on the cam cover and Exhaust Manifold. First tighten the 3 bolts that connect the air shut-off valve to the cam cover at 9 n.m (80 lb in), install the 2 Exhaust Manifold securing nuts which also require a torque of 9 n.m (80 lb in). The procedure continues with the installation of the intermediate hose onto the air shut-off valve followed by nut retention at 9 n.m (80 lb in). The last step includes connector application to the air shut-off valve.