{"product_id":"a-premium-belt-tensioner-assembly-with-pulley-for-subaru-h4-engines-oe-fit-thermoplastic-pulley-sealed-bearing","title":"A-Premium Belt Tensioner Assembly with Pulley for Subaru (H4 engines) — OE-fit, Thermoplastic Pulley, Sealed Bearing","description":"\u003cp\u003e\u003cstrong\u003eA-Premium Belt Tensioner Assembly with Pulley is a direct-fit replacement that restores correct serpentine belt tension for specified Subaru engines while operating smoothly and quietly.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your Subaru is showing belt noise, belt slip, or accessory drive issues, a worn tensioner assembly is often the culprit. This A-Premium unit is made to match original-equipment dimensions and fitment for a range of Subaru models and engine types, using a durable thermoplastic pulley and sealed bearing to maintain steady tension on a V-ribbed belt.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Subaru models and engines will this tensioner fit?\u003c\/h3\u003e\n\u003cp\u003eThis A-Premium tensioner covers many Subaru models from the early 2010s through 2020, including BRZ, Crosstrek, Forester, Impreza, Legacy, Outback, WRX, and XV Crosstrek with the listed H4 engines. Check the part reference numbers and engine displacement to confirm compatibility for your vehicle.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits BRZ 2013–2019 H4 2.0L\u003c\/li\u003e\n  \u003cli\u003eCrosstrek 2016–2017 H4 2.0L and XV Crosstrek 2013–2015 H4 2.0L\u003c\/li\u003e\n  \u003cli\u003eForester 2011–2018 H4 2.0L and 2.5L (varies by year)\u003c\/li\u003e\n  \u003cli\u003eImpreza 2012–2015 H4 2.0L, Legacy and Outback 2013–2019 H4 2.5L, WRX 2015–2020 H4 2.0L\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key specifications and reference numbers?\u003c\/h3\u003e\n\u003cp\u003eKnowing the exact dimensions and reference numbers helps ensure you select the correct replacement part. This assembly includes a single thermoplastic pulley engineered for V-ribbed belts and sized to match OE geometry.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReference numbers: 23769AA040, 23769AA05A, 39359, APV3181\u003c\/li\u003e\n  \u003cli\u003ePulley quantity: 1; belt type: V-ribbed\u003c\/li\u003e\n  \u003cli\u003ePulley outside diameter: 70 mm; bearing bore inside diameter: 17 mm; width: 25.5 mm\u003c\/li\u003e\n  \u003cli\u003eMaterial: thermoplastic pulley with sealed bearing for quiet rotation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this tensioner perform compared with the original part?\u003c\/h3\u003e\n\u003cp\u003eThe A-Premium assembly is manufactured to match original fit and function so it installs easily in place of the factory unit. It’s built to maintain correct belt tension and rotate smoothly under load, reducing belt noise and reducing the risk of premature belt wear.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned to match OE form, fit, and function for straightforward replacement\u003c\/li\u003e\n  \u003cli\u003eSealed bearing promotes smooth, quiet rotation and longer service life\u003c\/li\u003e\n  \u003cli\u003eThermoplastic pulley balances durability with reduced friction and weight\u003c\/li\u003e\n  \u003cli\u003eOne-year unlimited-mileage warranty for confident purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I check before installing this assembly?\u003c\/h3\u003e\n\u003cp\u003eBefore installation, confirm the part numbers, engine code, and belt type for your vehicle. Inspect the belt, pulleys, and accessory components; replacing the belt at the same time is often recommended if it shows cracking or glazing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify reference numbers: 23769AA040 \/ 23769AA05A \/ 39359 \/ APV3181\u003c\/li\u003e\n  \u003cli\u003eConfirm engine displacement and model year match the listed fitment\u003c\/li\u003e\n  \u003cli\u003eInspect existing belt and accessories; replace belt if worn\u003c\/li\u003e\n  \u003cli\u003eFollow vehicle manufacturer torque specs during installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This A-Premium Belt Tensioner Assembly is aimed at Subaru owners, independent mechanics, and DIY enthusiasts who need a reliable, direct-fit replacement for worn or noisy belt tensioners on specified BRZ, Crosstrek, Forester, Impreza, Legacy, Outback, WRX, and XV Crosstrek models. It’s a practical choice when restoring proper accessory drive operation and prolonging belt life while preserving factory fit and function.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this tensioner replace part number 23769AA040?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it is listed to replace 23769AA040 (also 23769AA05A, 39359, APV3181) for compatible Subaru models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the pulley material durable for long-term use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The pulley is made from thermoplastic with a sealed bearing, designed for smooth rotation and long service life.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"A-Premium","offers":[{"title":"Default Title","offer_id":48083053609118,"sku":"B08LPZ2GVS","price":64.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/a-premium-front-assembly_d7e583fe-a454-4774-b9f6-f1ecfed77a20.jpg?v=1785823169","url":"https:\/\/northtrailauto.ca\/products\/a-premium-belt-tensioner-assembly-with-pulley-for-subaru-h4-engines-oe-fit-thermoplastic-pulley-sealed-bearing","provider":"North Trail Auto","version":"1.0","type":"link"}