{"product_id":"gmb-430-8940-engine-timing-belt-tensioner","title":"GMB 430-8940 Engine Timing Belt Tensioner","description":"\u003ch2\u003eEngine Timing Belt Tensioner for Metro and Firefly\u003c\/h2\u003e\u003cp\u003eGMB 430-8940 is an engine timing belt tensioner built for direct-fit service on select Chevrolet Metro, Pontiac Firefly, and Geo Metro applications. It is manufactured to meet or exceed OEM specifications and uses a metal pulley with a single groove for dependable belt control.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEngine timing belt tensioner for valve train service\u003c\/li\u003e\n\u003cli\u003eMetal pulley construction for durability\u003c\/li\u003e\n\u003cli\u003eSingle-groove pulley design\u003c\/li\u003e\n\u003cli\u003eWorks with serpentine and V-belt pulley\/belt types as listed\u003c\/li\u003e\n\u003cli\u003eBuilt to meet or exceed OEM specifications\u003c\/li\u003e\n\u003cli\u003ePart number 430-8940 for easy identification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThis GMB timing belt tensioner is engineered for 1998-2000 Chevrolet Metro, 1996-2000 Pontiac Firefly, and 1996-1997 Geo Metro applications. The 430-8940 tensioner supports proper belt tension in the engine timing system, helping maintain stable belt tracking and consistent operation. Its metal pulley construction and single-groove layout make it a practical OE-style replacement for service work on these compact GM-platform vehicles. This part cross-references ACI 84042 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExcessive timing belt slack\u003c\/li\u003e\n\u003cli\u003eBelt noise from worn tension components\u003c\/li\u003e\n\u003cli\u003eUneven belt tracking at the pulley\u003c\/li\u003e\n\u003cli\u003eService replacement for a worn or noisy tensioner assembly\u003c\/li\u003e\n\u003cli\u003eTiming system maintenance on Metro and Firefly engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify belt routing and tensioner alignment before installation. Inspect the timing belt, idler components, and related seals during service, since worn parts can shorten the life of the new tensioner. Confirm vehicle fitment by year and model before ordering, especially for 1998-2000 Chevrolet Metro, 1996-2000 Pontiac Firefly, and 1996-1997 Geo Metro applications.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eGMB states this part is manufactured to meet or exceed OEM specifications, supporting OE-level fit and function for the listed applications. Part number 430-8940 is identified for accurate replacement matching.\u003c\/p\u003e","brand":"GMB","offers":[{"title":"Default Title","offer_id":52415086166197,"sku":"BFBQ-430-8940","price":23.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/G6_4308940_Ang.jpg?v=1777797372","url":"https:\/\/www.partcatalog.com\/products\/gmb-430-8940-engine-timing-belt-tensioner","provider":"PartCatalog","version":"1.0","type":"link"}