{"product_id":"moog-greaseable-super-strength-universal-joint-377-for-jeep-wrangler-heavy-duty-serviceable-u-joint","title":"MOOG Greaseable Super Strength Universal Joint 377 for Jeep Wrangler — Heavy-Duty, Serviceable U-Joint","description":"\u003cp\u003e\u003cstrong\u003eMOOG 377 Greaseable Super Strength universal joint is a heavy-duty, serviceable driveshaft U-joint engineered for higher torque applications and long-lasting on-vehicle service.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned and tested by MOOG engineers, this Super Strength® universal joint combines cold-forged bearing cups, a carburized steel cross and MOOG's MICRO SHIELD coating to resist corrosion while allowing on-vehicle greasing. It replaces worn or noisy U-joints in compatible Jeep, Dodge and Fargo applications and is built to endure severe duty where extra strength and serviceability matter.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the MOOG 377 improve durability under heavy load?\u003c\/h3\u003e\n\u003cp\u003eThe MOOG 377 is built for higher torque and horsepower environments. Precision forging, case hardening and heat treatment on critical components reduce wear and extend service life under demanding conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCold-forged, case-hardened bearing cups for abrasion resistance\u003c\/li\u003e\n  \u003cli\u003eCarburized and heat-processed steel cross for high fatigue strength\u003c\/li\u003e\n  \u003cli\u003eMICRO SHIELD coating for long-term rust and corrosion protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I grease this U-joint while it’s installed on the vehicle?\u003c\/h3\u003e\n\u003cp\u003eYes—MOOG designed the 377 to be greasable so you can top up lubricant without disassembly. The radial bearing cup design spreads grease 360° for even coverage, maintaining smooth operation and prolonging life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGrease fitting compatible with standard grease guns\u003c\/li\u003e\n  \u003cli\u003eRadial cup design for complete lubricant distribution\u003c\/li\u003e\n  \u003cli\u003eNitrile seals retain grease and block dirt ingress\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and fitment details should I confirm before buying?\u003c\/h3\u003e\n\u003cp\u003eThis U-joint covers a range of domestic and some foreign nameplates and specific model years; always verify fit using your vehicle’s year, make, model, engine and trim. Refer to compatibility notes and the confirmed-fit tool on your retailer’s listing before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits select Jeep, Dodge and Fargo models across listed years\u003c\/li\u003e\n  \u003cli\u003eCheck the seller’s confirmed-fit tool and any “i” notes for exceptions\u003c\/li\u003e\n  \u003cli\u003eMeasure existing U-joint and compare part specifications when unsure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat protective features keep contaminants out and grease in?\u003c\/h3\u003e\n\u003cp\u003eMOOG combined nitrile seals with a durable coating and precise machining to minimize contamination and maximize grease retention. These seals and the coating help the U-joint resist under-vehicle debris and moisture that cause premature failure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNitrile seals for superior grease retention and debris exclusion\u003c\/li\u003e\n  \u003cli\u003eMICRO SHIELD coating reduces corrosion in wet environments\u003c\/li\u003e\n  \u003cli\u003ePrecision-ground surfaces to reduce leakage paths and wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The MOOG 377 greasable Super Strength U-joint is aimed at do-it-yourself mechanics, professional technicians and owners of compatible Jeep, Dodge or Fargo vehicles who need a durable, serviceable driveshaft joint. It’s especially suited to drivers who tow, carry heavy loads or operate in harsh conditions and want a U-joint that can be maintained without removal.\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: Is the MOOG 377 U-joint serviceable with grease?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The MOOG 377 is greasable and accepts standard grease guns for on-vehicle lubrication.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this U-joint fit my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check your year, make, model, engine and trim against the seller's confirmed-fit tool and notes before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MOOG","offers":[{"title":"Default Title","offer_id":48084402241694,"sku":"B009HQJPAY","price":31.97,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/moog-377-front-packaging.jpg?v=1785853981","url":"https:\/\/northtrailauto.ca\/products\/moog-greaseable-super-strength-universal-joint-377-for-jeep-wrangler-heavy-duty-serviceable-u-joint","provider":"North Trail Auto","version":"1.0","type":"link"}