Belt Tensioner Assembly with Pulley Compatible with Honda/Acura

In this review of the belt tensioner assembly with pulley, the bottom line is straightforward: this unit is for Honda and Acura owners who need a direct-fit replacement and want an easy installation. The reviewer finds the part fits the specified models from Accord, Civic, CR-V and Element to several Acura models and replaces reference numbers like 31170RAAA01 and 31170PNA023. The single biggest reason to buy is the precise vehicle fitment and straightforward swap-in design, which helps get a worn accessory drive back to normal without time spent on modifications.

Key Features

• Direct Fitment: Designed for specific Honda and Acura engines so the part installs without modifications on listed model years.
• One Pulley Design: The single pulley setup simplifies replacement and aligns with the original serpentine belt routing used on these vehicles.
• Measured Dimensions: The 76.5 mm outside diameter and 17 mm bearing bore match common OEM sizing for reliable compatibility.
• Serpentine Belt Compatible: Built for serpentine belt systems so it works with the factory belt layout and accessory drive tensioning.
• Warranty Coverage: Backed by a one-year unlimited-mileage guarantee that offers peace of mind after installation.

Who It's For

This part is aimed at DIY mechanics and independent shops working on Honda Accord 2003-2007 L4 2.4L, Civic 2006-2015 L4 2.0L, CR-V 2002-2014 L4 2.4L, Element 2003-2011 L4 2.4L, and compatible Acura four-cylinder models. If the vehicle shows belt noise, slack, or the factory tensioner has failed, this replacement provides a straightforward way to restore proper belt tension and accessory operation.

Owners who need a heavy-duty, long-term OEM-grade solution or who experienced early failures with aftermarket tensioners may prefer an original equipment provider. Also, if the vehicle requires multiple pulleys or a different accessory position, this single-pulley assembly is not appropriate.

Pros & Cons

Pros

• Good fit and ease of installation for listed Honda and Acura models, reducing workshop time.
• Correct serpentine belt compatibility and dimensions that match common OEM installations.
• One-year unlimited-mileage guarantee provides a safety net for buyers after replacement.

Cons

• Mixed customer feedback on long-term durability means some users experienced premature failure or noise.
• Reports of occasional belt slippage or squeak indicate that installation and belt condition should be checked carefully.

Specifications

Vehicle Fitment	Honda Accord, Civic, CR-V, Element; Acura TSX, CSX, RDX, ILX (listed years)
Reference Numbers	31170RAAA01, 31170PNA023, 31170PNA003, 31170PNA013, 31170PND003, 38278
Position	Accessory Drive
Pulley Quantity	1
Belt Type	Serpentine
Outside Diameter	76.5 mm
Bearing Bore Inside Diameter	17 mm

Our Verdict

The belt tensioner assembly is a practical, cost-conscious replacement for owners of the listed Honda and Acura four-cylinder models who need a direct-fit part and easy installation. While build quality reports are mixed, the correct dimensions, serpentine compatibility and one-year guarantee make it a reasonable choice for most routine repairs, provided installers inspect the belt and pulleys during fitment.

Frequently Asked Questions

Will this tensioner fit my Civic?
Check model year and engine: it fits Civic 2006-2015 with the L4 2.0L engine as specified.

Does it come with a warranty?
Yes, the manufacturer provides a one-year unlimited-mileage guarantee on the assembly.

Can it replace OEM ref 31170RAAA01?
Yes, it is listed as compatible with reference numbers including 31170RAAA01 and 31170PNA023.