Dorman - OE Solutions Secondary Air Injection Check Valve P/N:911-988
Help keep exhaust gases away from the air pump with the Dorman secondary air injection check valve 911-154, a one-way valve that lets pump air pass into the exhaust while blocking backflow toward the pump. It fits many vehicles, among them the 2005-2009 Buick LaCrosse, 2005-2009 Buick Allure and 2008 Buick Lucerne with the V6-3.8L engine, as a direct-fit replacement. See the Buyer's Guide tab for the full list.
Specifications: cast aluminum; black and silver finish; 0.94 in inlet; 0.8 in outlet; 18 psi maximum pressure rating; -40C to 125C working temperature range. The package contains one check valve. Country of origin: China.
Signs this part may need replacing: a check engine light related to the secondary air system, a cracked or leaking valve, or evidence of exhaust reaching the air pump. If the check valve is the cause, this unit replaces it. Diagnose the system before ordering.
Interchange: EC1336 · 12619125 · 12660127 · DV132 · DV147
This part cross-references / interchanges with the following part numbers:
What does a secondary air injection check valve do?
It is a one-way valve. It lets air from the secondary air pump pass into the exhaust while the system operates, and it blocks exhaust gases from flowing back toward the pump.
Which vehicles does the Dorman 911-154 fit?
It fits the 2005-2009 Buick LaCrosse, 2005-2009 Buick Allure and 2008 Buick Lucerne with the V6-3.8L engine, among others. Check the Buyer's Guide tab for every application.
What are the specifications of this check valve?
It has a cast aluminum body with a black and silver finish, a 0.94 in inlet, a 0.8 in outlet, an 18 psi maximum pressure rating and a -40C to 125C working temperature range.
What comes in the package?
The package contains one check valve. Consult the vehicle service information for any gaskets or fasteners the installation calls for.
What are signs the check valve may need replacing?
Warning signs include a check engine light tied to the secondary air system, a cracked or leaking valve, or exhaust reaching the air pump. Diagnose first, as other parts can cause the same signs.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.