{"product_id":"mas-ignition-coil-pack-uf303-e255-replacement-for-chevy-gmc-2-8l-4-2l-engines-oe-fit-1-year-warranty","title":"MAS Ignition Coil Pack UF303 \/ E255 Replacement for Chevy \u0026 GMC 2.8L–4.2L Engines — OE Fit, 1-Year Warranty","description":"\u003cb\u003eMAS Ignition Coil Pack UF303 E255 is a direct-fit replacement ignition coil set for compatible 2.8L–4.2L GM and Isuzu engines that restores spark delivery and resolves common coil-related drivability symptoms.\u003c\/b\u003e\n\n\u003cp\u003eThis MAS coil pack replaces worn or failed ignition coils on a long list of GM and Isuzu models, including Chevy Trailblazer, Colorado, Buick Rainier, GMC Canyon, Hummer H3, Envoy, Saab, Oldsmobile and select Isuzu and Saab vehicles. Built to match OE fitment and electrical specifications, the UF303\/E255 unit is offered with a one-year warranty and cross-references many OEM and aftermarket numbers to simplify parts matching.\u003c\/p\u003e\n\n\u003ch3\u003eWill this coil pack fit my vehicle?\u003c\/h3\u003e\n\u003cp\u003eCompatibility depends on engine type and model year—this MAS UF303\/E255 is intended for 4-cylinder 2.8L, 5-cylinder 3.5L and 3.7L, and 6-cylinder 4.2L engine families listed by maker. Use your vehicle year\/make\/model selector or compare the part cross-reference list to confirm fitment before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Chevy Trailblazer EXT, Colorado; GMC Canyon, Envoy; Buick Rainier; Hummer H3; Isuzu i-280; Saab and select Oldsmobile models\u003c\/li\u003e\n  \u003cli\u003eEngine families covered: L4 2.8L, L5 3.5L \u0026amp; 3.7L, L6 4.2L\u003c\/li\u003e\n  \u003cli\u003eCross-references: UF-303, E255, IC414, 12568062, 19300921 and many OEM numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will replacing the ignition coil pack affect drivability?\u003c\/h3\u003e\n\u003cp\u003eInstalling a fresh MAS coil pack can eliminate symptoms caused by weak or intermittent spark, improving start-up reliability and smoothing engine performance. It can also reduce misfires and the conditions that lead to poor fuel economy and catalytic converter stress.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces hard\/no-start and long-crank situations\u003c\/li\u003e\n  \u003cli\u003eLowers misfire rates and rough idle occurrences\u003c\/li\u003e\n  \u003cli\u003eHelps restore consistent power delivery and transmission shift quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I check to prolong coil life?\u003c\/h3\u003e\n\u003cp\u003eCoils endure extra stress when working with worn spark plugs or poor ignition components. Regularly inspect spark plugs, plug wires (if used), and ignition boots; replace aged parts to avoid overloading the new coils and to maintain long-term reliability.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplace spark plugs according to manufacturer interval\u003c\/li\u003e\n  \u003cli\u003eInspect for oil, coolant, or debris that can damage coil boots\u003c\/li\u003e\n  \u003cli\u003eAddress engine misfires and vacuum leaks promptly to prevent coil overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat warranty and quality assurances are included?\u003c\/h3\u003e\n\u003cp\u003eThis MAS coil pack set comes with a one-year warranty covering manufacturing defects. If the coil fails within the warranty period, contact the seller for replacement service to minimize downtime and repair cost.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne-year limited warranty included\u003c\/li\u003e\n  \u003cli\u003eManufactured to meet fit and electrical specifications of listed applications\u003c\/li\u003e\n  \u003cli\u003eSupplied with full cross-reference numbers for easier parts verification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The MAS Ignition Coil Pack UF303 E255 is aimed at DIY mechanics, independent repair shops, and vehicle owners who need a reliable, direct-replacement ignition coil for GM and related engine platforms. It's a practical choice if your vehicle exhibits misfires, long cranking, a check-engine light for ignition faults, or if you’re replacing old coils as preventative maintenance.\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 UF303\/E255 come with a warranty?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The MAS UF303\/E255 ignition coil pack includes a one-year warranty against manufacturing defects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I replace a single coil or must I replace all?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You can replace individual failed coils, but replacing all coils together helps ensure balanced performance and reduces future failures.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MAS","offers":[{"title":"Default Title","offer_id":48086993764510,"sku":"B08142K9V1","price":31.76,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/mas-uf303-front-view.jpg?v=1785912595","url":"https:\/\/northtrailauto.ca\/products\/mas-ignition-coil-pack-uf303-e255-replacement-for-chevy-gmc-2-8l-4-2l-engines-oe-fit-1-year-warranty","provider":"North Trail Auto","version":"1.0","type":"link"}