GM Genuine Parts drive belt tensioner keeps belt at proper tension for smooth engine operation.
GM Genuine Parts drive belt tensioner keeps belt at proper tension for smooth engine operation.

GM Genuine Parts 12670574 Drive Belt Tensioner | OE-Quality Serpentine Belt Tensioner

GM Genuine Parts Drive Belt Tensioner 12670574 Engineered to support the heart of your vehicle’s belt system,...
Vendor: GM GENUINE PARTS
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GM Genuine Parts drive belt tensioner keeps belt at proper tension for smooth engine operation.

GM Genuine Parts 12670574 Drive Belt Tensioner | OE-Quality Serpentine Belt Tensioner

£89.93
GM Genuine Parts drive belt tensioner keeps belt at proper tension for smooth engine operation.

GM Genuine Parts 12670574 Drive Belt Tensioner | OE-Quality Serpentine Belt Tensioner

£89.93
Description
Description
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GM Genuine Parts Drive Belt Tensioner 12670574

Engineered to support the heart of your vehicle’s belt system, the GM Genuine Parts Drive Belt Tensioner uses a spring-loaded pulley to apply steady force on the serpentine belt. When installed, it helps keep the belt aligned with pulleys, supporting consistent accessory operation across a wide range of driving conditions. The design emphasizes reliability, quiet operation, and durable performance under real-world use.

Why this tensioner stands out

  • Designed, engineered and tested to rigorous GM standards, and backed by General Motors.
  • Spring-loaded pulley actively draws tension to keep the serpentine belt properly engaged.
  • True OE part installed during GM production or validated by GM for GM vehicles.
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
  • GM regularly updates production and service part designs to integrate new materials and technologies.

What to expect in daily use

  • Helps maintain belt tension, supporting reliable operation of alternator, power steering, A/C, and other belt-driven accessories.
  • Designed for Chevrolet, Buick, GMC, and Cadillac vehicles, reflecting GM’s engineering standards.

Beyond the factory fit, GM Genuine Parts are built to handle a range of road conditions and climates. The tensioner works as part of a broader belt system designed to cope with engine heat, temperature swings, and regular driving cycles. While individual results may vary, a properly functioning tensioner contributes to smoother belt performance and reduced wear on drive components. This part is a practical choice for those seeking an authentic GM replacement that aligns with the original engineering intent.

Installation notes and care

When replacing, follow GM service guidelines and use the correct fasteners and torque specs. Inspect the serpentine belt for wear and replace if necessary. If you notice belt squeal, misalignment, or unusual tension, this tensioner may be part of the issue. Pair with a new belt for best performance and longevity.

FAQ

Q: What does the 12670574 GM Genuine Parts Drive Belt Tensioner do?

A: It uses a spring-loaded pulley to apply consistent tension to the serpentine belt, supporting proper engagement of engine accessories.

Q: Is this tensioner an OE GM part?

A: Yes. GM Genuine Parts are designed, engineered, and tested to GM standards and backed by General Motors for GM vehicles.

Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

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