The best belt tensioner pulley assembly depends on your vehicle’s year, engine, and accessory-drive configuration. The ACDelco Gold assembly is a general replacement option, while the A-Premium assemblies target specific Honda and Acura, Dodge and Jeep, and Toyota and Lexus applications. Use the comparison below to identify a likely match, then confirm the part number and fitment for your exact vehicle before ordering.
| Product | Best For | Key Fitment Detail |
|---|---|---|
| ACDelco Gold 38158 | Buyers seeking a branded replacement | Confirm vehicle fitment separately |
| A-Premium Honda/Acura L4 | Listed four-cylinder applications | One pulley; 76.5 mm outside diameter |
| A-Premium Dodge/Jeep | Listed 3.7L and 4.7L applications | Check model year and engine |
| A-Premium Honda V6 | Listed Honda 3.5L applications | Two pulleys; V-ribbed belt |
| A-Premium Toyota/Lexus | Listed four-cylinder applications | Check the reference numbers |
ACDelco Gold 38158 Tensioner Assembly
Best for: Buyers looking for an ACDelco Gold replacement part and who will verify application fitment against their vehicle. This assembly is designed to keep the drive belt at proper tension, and its listed construction is aluminum with a black pulley.
The product is described as a premium aftermarket replacement part. Some ACDelco Gold parts may previously have appeared under the ACDelco Professional name. Choose this assembly if its part number and fitment match your vehicle.
Limitation: The supplied product details do not list vehicle applications, so confirm compatibility before purchase rather than relying on the brand or appearance alone.
A-Premium Honda and Acura L4 Tensioner
Best for: Owners of listed Honda and Acura four-cylinder models who can match the vehicle year and engine to the application list. Examples include specified Accord, Civic, CR-V, Element, TSX, CSX, RDX, and ILX configurations.
The assembly has one pulley, an accessory-drive position, a 76.5 mm outside diameter, a 17 mm bearing bore, and a 37.5 mm width. Its reference numbers include 31170RAAA01 and 31170PNA023. These details make it easier to compare against the removed part or a vehicle-specific catalog.
Limitation: Fitment varies by model year, engine, and—in some applications—where the vehicle was made. The listing specifies U.S.-made models for certain applications, so verify those conditions.
A-Premium Dodge and Jeep Tensioner Assembly
Best for: Owners of listed Dodge, Jeep, Chrysler, Mitsubishi, and Ram applications with a 3.7L V6 or 4.7L V8. The fitment list covers vehicles including the Dakota, Durango, Ram 1500, Commander, Grand Cherokee, and Liberty, with model years differing by vehicle and engine.
Reference numbers include 53030958AC, 53030958AD, 68045800AA, and several aftermarket cross-references. Use the vehicle-specific fitment and reference number to compare this assembly with the required part.
Limitation: The broad model list includes multiple years and engine options. A nameplate match alone is not enough; confirm the exact year and engine before choosing it.
A-Premium Honda V6 Tensioner Assembly
Best for: Owners of listed Honda 3.5L V6 applications, including specific Accord, Accord Crosstour, Pilot, and Odyssey configurations. It is a better match than a single-pulley option when the vehicle’s specified assembly uses two pulleys.
The product lists two pulleys, a V-ribbed belt type, an 80 mm outside diameter, and bearing bore measurements of 12 mm and 17 mm. Reference numbers include 31170-R70-A01 and 31170-RKB-005. The listing also calls out details such as damper-equipped tensioners and particular Odyssey versions.
Limitation: Fitment can depend on trim, engine code, drive configuration, or damper arrangement. Check those details carefully against the application list.
A-Premium Toyota and Lexus Tensioner Assembly
Best for: Owners of listed Toyota and Lexus four-cylinder applications, including specified Highlander, RAV4, Camry, Venza, Sienna, and NX300h models. The fitment list also includes Scion tC applications.
Reference numbers include 166200V020, 166200V021, and 1662036010. If one of these numbers matches the required replacement part, it can help narrow the selection, but confirm the complete vehicle application as well.
Limitation: The supplied specifications do not provide pulley dimensions or pulley count. Do not assume these measurements from a similar-looking tensioner; verify the part number and vehicle fitment.
Buying Guide: How to Choose a Belt Tensioner Assembly
How do you confirm fitment?
Start with the vehicle’s year, make, model, engine size, and, when relevant, trim or drive configuration. Compare those details with the product’s listed applications. Then check the replacement part number or reference number. A vehicle model may use different tensioners across engines or production configurations.
Should you compare the pulley specifications?
Yes. When available, compare pulley count, outside diameter, width, bearing bore, and belt type with the required part. For example, the listed Honda L4 assembly has one pulley, while the Honda V6 assembly lists two. These are not interchangeable just because both are belt tensioners.
When is a reference number useful?
Reference numbers help you cross-check a part against an existing component or a vehicle-specific parts catalog. Match the full number where possible, and treat cross-references as a verification aid rather than proof of fit by themselves.
What else should buyers consider?
Check whether the listing specifies a damper, engine code, manufacturing location, or accessory-drive position. If the product details do not provide your vehicle’s fitment or key dimensions, confirm them with a reliable parts lookup before ordering.
Frequently Asked Questions
What does a belt tensioner assembly do?
It keeps the drive belt at the proper tension. The ACDelco listing specifically describes this function.
Can I choose a tensioner by vehicle model alone?
No. Year, engine, and configuration can affect fitment. Match the full application details and reference number.
Are one-pulley and two-pulley assemblies interchangeable?
Do not assume they are. Compare the required pulley count and other specifications for the exact application.
What if my vehicle is not listed?
Do not infer compatibility from a similar model. Check the required part number in a vehicle-specific catalog or with a parts professional.