--- product_id: 6419135 title: "Dorman 419-100 Accessory Drive Belt Tensioner Assembly Compatible with Select Models" brand: "dorman" price: "£33.15" currency: GBP in_stock: true reviews_count: 8 category: "Dorman" url: https://www.desertcart.co.uk/products/6419135-dorman-419-100-accessory-drive-belt-tensioner-assembly-compatible-select store_origin: GB region: United Kingdom --- # Includes new bolt & lock washer Direct OE fit precision Durable, fatigue-resistant build Dorman 419-100 Accessory Drive Belt Tensioner Assembly Compatible with Select Models **Brand:** dorman **Price:** £33.15 **Availability:** ✅ In Stock ## Summary > ⚙️ Upgrade your drive, ditch the squeak — tension perfected! ## Quick Answers - **What is this?** Dorman 419-100 Accessory Drive Belt Tensioner Assembly Compatible with Select Models by dorman - **How much does it cost?** £33.15 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/6419135-dorman-419-100-accessory-drive-belt-tensioner-assembly-compatible-select) ## Best For - dorman enthusiasts ## Why This Product - Trusted dorman brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Perfect OE Match:** Engineered to replicate original equipment fit for seamless installation and optimal performance. - • **Expert-Backed Quality:** Supported by over a century of automotive expertise and trusted product specialists in the USA. - • **Reliable Belt Tension:** Ensures consistent belt tension to eliminate slipping and squeaking, extending belt life. - • **Durability You Can Trust:** Manufactured under strict specs with fatigue-resistant materials for long-lasting reliability. - • **Hassle-Free Installation:** Comes with a new bolt and lock washer for a secure, worry-free fit every time. ## Overview The Dorman 419-100 Accessory Drive Belt Tensioner Assembly is a direct OE replacement designed for select vehicles, engineered to maintain proper belt tension and prevent slipping or wear. Featuring durable construction and including a new bolt and lock washer, it ensures reliable, long-lasting performance backed by over 100 years of automotive expertise. ## Description This accessory drive belt tensioner assembly is designed to match the fit of an original equipment assembly on specified vehicles. It is engineered to help ensure proper belt tension when an original belt is slipping, broken, or worn from fatigue. Review: Fits 2001 s10 blazer 4.3 works great! - Works great. Installed on a 01 blazer 4.3. Got rid of squeaking. When i looked at the old one installed i noted it was like clock hands pointing at 7 or 8. New one is like halfway between 6 and 7. I also replaced belt. Comes with new bolt and lock washer which i also used. Great product Review: Worked great on my old 2000 S10 LS - Worked great! Looked exactly like the one I replaced which was probably original to the truck. Seems like great quality. ## Features - Direct replacement - this accessory drive belt tensioner assembly is designed to match the fit of an original equipment assembly on specified vehicles - Ideal solution - engineered to help ensure proper belt tension when an original belt is slipping, broken, or worn from fatigue - Durable construction - designed and manufactured to strict specifications for reliable performance - Trustworthy quality - backed by a team of product experts in the United States and more than a century of automotive experience - Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002YC8BN0 | | Best Sellers Rank | #543,506 in Automotive ( See Top 100 in Automotive ) #940 in Automotive Replacement Belt Tensioners | | Brand | Dorman | | Customer Reviews | 4.3 4.3 out of 5 stars (409) | | Date First Available | October 10, 2007 | | Exterior | Machined | | Is Discontinued By Manufacturer | No | | Item Weight | 1.37 pounds | | Item model number | 419-100 | | Manufacturer | Dorman Products | | Manufacturer Part Number | 419-100 | | Model | 419-100 | | OEM Part Number | 38103; 45897; 49203; 5897; 89231; GM1413170; SK38103; 8-12456-152-0; 89017309 | | Position | Center | | Product Dimensions | 5.8 x 5.1 x 5.1 inches | ## Images ![Dorman 419-100 Accessory Drive Belt Tensioner Assembly Compatible with Select Models - Image 1](https://m.media-amazon.com/images/I/9137BnaJg-L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fits 2001 s10 blazer 4.3 works great! *by J***E on April 3, 2019* Works great. Installed on a 01 blazer 4.3. Got rid of squeaking. When i looked at the old one installed i noted it was like clock hands pointing at 7 or 8. New one is like halfway between 6 and 7. I also replaced belt. Comes with new bolt and lock washer which i also used. Great product ### ⭐⭐⭐⭐⭐ Worked great on my old 2000 S10 LS *by T***N on October 23, 2024* Worked great! Looked exactly like the one I replaced which was probably original to the truck. Seems like great quality. ### ⭐⭐⭐⭐⭐ Perfect fit *by B***S on June 15, 2024* As good as OEM for 2001 Chevy Silverado 1500 4.3 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/6419135-dorman-419-100-accessory-drive-belt-tensioner-assembly-compatible-select](https://www.desertcart.co.uk/products/6419135-dorman-419-100-accessory-drive-belt-tensioner-assembly-compatible-select) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-01*