Search  for anything...

ACDelco 45C1120 Idler Arm

  • Based on 173 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $10.64 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: 15 left in stock
Fulfilled by Autoplicity ✅

Arrives Apr 8 – Apr 9
Order within 20 hours and 24 seconds
Available payment plans shown during checkout

Features

  • Designed to deliver trouble-free, consistent performance
  • Right for your vehicle and lifestyle
  • Made from high-quality materials for ultimate durability
  • Manufactured to meet or exceed strict quality requirements
  • If you have any questions or need fitment information for your vehicle, please contact with us

Description

Idler Arm


Manufacturer: ‎ACDelco


Brand: ‎ACDelco


Item Weight: ‎9.6 ounces


Product Dimensions: ‎10.7 x 4 x 3 inches


Item model number: ‎45C1120


Manufacturer Part Number: ‎45C1120


OEM Part Number: ‎89000786


Date First Available: October 10, 2007


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Apr 8 – Apr 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • AC Delco Professional is the way to fly
AC Delco Professional is the way to fly. The idler mount, arm, and pitman arm are only about $60 total more than the same parts in the ACDelco Advantage line, but the Professional line is much beefier. They work for the GMT 800 trucks. Strongly recommend the OTC 6496 Close Quarters Pitman Arm Puller for Truck/SUV, given the frame on these trucks; that puller is the best $60 your may ever spend. In addition to stopping the tire wear issues with the old idler and pitman arms, this made a huge difference in the ride quality of my truck at highway speeds! I used Mystik JT-6 Hi-Temp lithium-complex grease to lube them up, and all the ball joints and tie rods. It's a high temp grease for wheel bearings, but cheap and has killer specs (they do list it as a chassis grease). ... show more
Reviewed in the United States on April 5, 2018 by Vetteboy

  • Great Parts at a Great Price
I went with ACDelco Professional parts when I replaced all of my front end. A few reviewers stated that they replaced their Idler or Pitman Arm with ACDelco Advantage parts, and the repair job did not last. So I took their advice and spent a few extra dollars on it. I bought both an Idler Arm and Pitman Arm, and both looked a whole lot like the original equipment. I replaced everything under my front end: Pitman arm, Idler arm, Inner and Outer Tie Rods. It was the Idler Arm though that was totally wobbly and jinky. As far as I could tell (after removing it) the Pitman Arm was solid as a rock. It was good to have all the parts off and replaced. I definitely will not forget to grease them in the future. This fit my 2006 Chevy Express 2500. ... show more
Reviewed in the United States on July 18, 2018 by Brian Quinlan

  • A great pitman arm, but...
This is a very stout pitman arm, at a great price from Amazon warehouse deals. The problem is, of course, that it's supposed to be an idler arm. As you can see, the 4 grooved spline teeth are cast and set well, and if I'd ordered a pitman arm it would be at least a 5 star. I doubt it's Amazons fault, it appears someone returned the incorrect part in the correct box per this part number. I contacted ACdelco, who promptly told me to buzz off, and then Amazon directly, who as always where top notch about a return. I'll update my review when the idler arm arrives. ... show more
Reviewed in the United States on February 12, 2020 by D.J. W.

  • Made in China!!! Sent Back!!!
Quality was not as good as the original which was a GM Part made in the USA. This GM Part is made in China and has no GM part number cast into the part. SENT BACK!!!!
Reviewed in the United States on February 3, 2021 by Thomas R. Cox

  • Good solid product - fits like an oem part
Seems to be a solid well built part which should last a while - I made the mistake of buying cheaper front end kit made by Detroit diesel which lasted less than 5k miles ! Should have purchased the oem quality first time around and saved myself twice the headache of replacing these parts ! Lesson learnt ! ... show more
Reviewed in the United States on December 15, 2020 by Zameer Minhas

  • Double check your order
Ordered an idler arm and received another pitman arm. Didn’t notice it was a pitman arm until I was ready to install the part. Now I’m past my return window and stuck with two pitman arms.
Reviewed in the United States on February 15, 2019 by Thomas Evans

  • Fit perfect.
I bought this for my 2004 GMC YUKON DENALI. It fits perfect just like original parts. Only had it on 2 weeks so we will see how they hold up but as of now it works great.
Reviewed in the United States on July 10, 2019 by Bradly Willyard

  • Great replacement arm
Really good quality idler arm. Fit perfectly in place of the original one on my 05 silverado 1500. Pretty easy to replace also and a really good price.
Reviewed in the United States on January 9, 2020 by Amazon Customer

Can't find a product?

Find it on Amazon first, then paste the link below.