{"product_id":"trq-ignition-coil-set-compatible-with-2017-2018-subaru-forester-4","title":"TRQ Ignition Coil Set Compatible with 2017-2018 Subaru Forester - 4","description":"\u003cp\u003eIn this review of the TRQ Ignition Coil Set, the bottom line is simple: this 4-piece coil kit is aimed at Subaru owners who need a dependable, direct-replacement repair that restores engine smoothness without modification. The reviewer found these coils best for DIY mechanics and independent shops replacing worn or failing coils on H4 2.0L and 2.5L Subaru engines. The biggest reason to buy is the direct-fit design and pre-assembled boots that save installation time while delivering solid value compared with OE-level modules.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete 4-piece kit:\u003c\/strong\u003e Includes four ignition coils so the installer can replace all cylinders at once and avoid uneven wear between old and new parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect replacement fit:\u003c\/strong\u003e Engineered to match original equipment dimensions so no modifications are needed during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e High dielectric epoxy and reinforced bobbins improve longevity under heat and vibration for extended service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective boot materials:\u003c\/strong\u003e Rubber, silicone, or phenolic resin shell resists premature boot wear and helps maintain a reliable spark transfer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide model compatibility:\u003c\/strong\u003e Designed for multiple Subaru H4 applications including Forester, Outback, Legacy, and WRX for straightforward fitment checks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe TRQ Ignition Coil Set is ideal for owners of 2015-21 WRX and 2015-19 Outback or Legacy and 2017-18 Forester models with H4 2.0L or 2.5L engines who want a straightforward, cost-effective replacement. It suits DIY enthusiasts comfortable with basic engine work and independent shops replacing coils as part of routine tune-ups or to address misfires and rough idle.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include owners seeking OEM-branded coils for warranty continuity or vehicles with diagnosed electrical issues beyond coils (such as wiring harness damage); in such cases a deeper electrical diagnosis or OEM parts may be preferable.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect-fit design makes installation quick and eliminates modifications for most compatible Subaru H4 engines.\u003c\/li\u003e\n\u003cli\u003eQuality construction with reinforced bobbins and high dielectric epoxy for improved durability.\u003c\/li\u003e\n\u003cli\u003eGood value as a 4-piece set, allowing full-bank replacement to restore consistent performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users report mixed outcomes on long-term reliability, so occasional coil failure has been noted in customer feedback.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Contents\u003c\/td\u003e\n\u003ctd\u003e4 ignition coils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003e2015-19 Outback, 2017-18 Forester, 2015-19 Legacy, 2015-21 WRX (H4 2.0L \/ 2.5L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Numbers\u003c\/td\u003e\n\u003ctd\u003e22433AA70A; 22433AA70B; 178-8570; UF767 (and others)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil Type\u003c\/td\u003e\n\u003ctd\u003eDirect replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtective Shell\u003c\/td\u003e\n\u003ctd\u003eRubber, silicone, or phenolic resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e4 piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe TRQ ignition coil set is a practical, cost-conscious choice for Subaru owners who need a reliable direct-replacement to restore engine smoothness and acceleration. With solid materials, pre-assembled boots, and full-bank coverage, it represents good value for DIYers and independent shops, though those prioritizing OEM branding or concerned about isolated failure reports may prefer alternative options.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill these coils fit my 2017 Forester 2.5L?\u003c\/strong\u003e\u003cbr\u003eYes, the kit is listed as compatible with the 2017-18 Forester H4 2.5L; confirm fitment against the vehicle before purchase.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre any modifications required to install these coils?\u003c\/strong\u003e\u003cbr\u003eNo, the coils are designed as direct replacements with pre-assembled components so no modifications should be necessary for supported models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the kit include all four coils for a full replacement?\u003c\/strong\u003e\u003cbr\u003eYes, the package contains four ignition coils to replace all cylinders at once for consistent performance.\u003c\/p\u003e","brand":"TRQ","offers":[{"title":"Default Title","offer_id":48608366788827,"sku":"B088BDR34Y","price":128.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/619eNE_PEoL._AC_SL1500.jpg?v=1778384832","url":"https:\/\/gearmusthave.com\/products\/trq-ignition-coil-set-compatible-with-2017-2018-subaru-forester-4","provider":"GearMustHave","version":"1.0","type":"link"}