{"product_id":"spicer-706031x-pinion-bearing-kit-1","title":"Spicer Differential Inner Pinion Head Bearing \u0026 Race Kit for Dana 44 Axles","description":"\u003cp data-path-to-node=\"7\"\u003eEliminate catastrophic differential gear howling, correct erratic pinion depth, and restore precision rotational geometry to your gear set with this genuine \u003cb data-path-to-node=\"7\" data-index-in-node=\"157\"\u003eSpicer Differential Inner Pinion Head Bearing Kit\u003c\/b\u003e. Specifically engineered to replace the high-load inner pinion bearing assembly sitting directly behind the pinion gear head, this factory-matched cup and cone kit provides a premium repair solution for standard \u003cb data-path-to-node=\"7\" data-index-in-node=\"419\"\u003eDana 44 axle housings\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003eThe inner pinion head bearing handles the absolute brunt of the radial force and intense structural thrust generated by the ring and pinion mesh. Over high mileage, severe off-road trail abuse, or gear oil breakdown, the tapered rollers can pit, score, or overheat. This wear results in a characteristic deep, cyclical whining or rumbling sound that changes pitch directly with vehicle acceleration and deceleration, leading to loose pinion depth tolerances that can rapidly destroy the contact pattern of your ring and pinion set.\u003c\/p\u003e\n\u003cp data-path-to-node=\"9\" id=\"p-rc_8a35c2d0dfcec00f-148\"\u003e\u003cspan class=\"citation-141\"\u003eThis original equipment manufacturer (OEM) kit includes a matching \u003c\/span\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"67\"\u003e\u003cspan class=\"citation-141\"\u003einner bearing cone and outer race\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-141 citation-end-141\"\u003e (utilizing the industry-standard high-capacity 31594\/31520 footprint).\u003csup class=\"superscript\" data-turn-source-index=\"3\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e Precision-ground from case-hardened bearing steel, choosing a genuine Spicer replacement ensures strict original equipment tolerances are met—giving your differential the exact structural stiffness and heat dissipation required for smooth, whisper-quiet operation. \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eKit Contents:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"11\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,0,0\" id=\"p-rc_8a35c2d0dfcec00f-149\"\u003e\u003cspan class=\"citation-140 citation-end-140\"\u003e(1) Premium Tapered Pinion Head Bearing Cone (Inner Section — 31594)\u003csup class=\"superscript\" data-turn-source-index=\"4\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\" id=\"p-rc_8a35c2d0dfcec00f-150\"\u003e\u003cspan class=\"citation-139 citation-end-139\"\u003e(1) Precision-Ground Pinion Bearing Cup \/ Race (Outer Section — 31520)\u003csup class=\"superscript\" data-turn-source-index=\"5\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"12\"\u003e\u003cb data-path-to-node=\"12\" data-index-in-node=\"0\"\u003eKit Highlights:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"13\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,0,0\"\u003e\u003cb data-path-to-node=\"13,0,0\" data-index-in-node=\"0\"\u003eMatched Component Pairing:\u003c\/b\u003e Pre-bundled cup and cone assembly ensures flawless contact patterns across the tapered rollers, eliminating the micro-vibrations caused by mixing unmatched brands.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,1,0\" id=\"p-rc_8a35c2d0dfcec00f-151\"\u003e\u003cspan class=\"citation-138\"\u003e\u003c\/span\u003e\u003cb data-path-to-node=\"13,1,0\" data-index-in-node=\"0\"\u003e\u003cspan class=\"citation-138\"\u003eGenuine Spicer OEM Quality:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-138 citation-end-138\"\u003e Manufactured by Dana to original equipment engineering specifications, providing vastly superior structural fatigue life compared to budget aftermarket alternatives.\u003csup class=\"superscript\" data-turn-source-index=\"6\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,2,0\"\u003e\u003cb data-path-to-node=\"13,2,0\" data-index-in-node=\"0\"\u003eCase-Hardened Construction:\u003c\/b\u003e Forged from high-cleanliness steel to withstand intense rotational friction and sudden torque loads on heavily loaded 4x4 trucks, Jeeps, and SUVs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,3,0\"\u003e\u003cb data-path-to-node=\"13,3,0\" data-index-in-node=\"0\"\u003eRestores Critical Pinion Depth:\u003c\/b\u003e Provides a perfectly concentric foundation to correctly set your pinion depth and bearing preload during a differential overhaul or ring and pinion gear swap.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"14\"\u003e\u003cb data-path-to-node=\"14\" data-index-in-node=\"0\"\u003eVehicle \u0026amp; Axle Fitment:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"15\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,0,0\" id=\"p-rc_8a35c2d0dfcec00f-152\"\u003e\u003cspan class=\"citation-137\"\u003e\u003c\/span\u003e\u003cb data-path-to-node=\"15,0,0\" data-index-in-node=\"0\"\u003e\u003cspan class=\"citation-137\"\u003eAxle Profiles:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-137\"\u003e Fits \u003c\/span\u003e\u003cb data-path-to-node=\"15,0,0\" data-index-in-node=\"20\"\u003e\u003cspan class=\"citation-137\"\u003eDana 44\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-137 citation-end-137\"\u003e (Front or Rear) Axle Housings (Commonly fits 2006 and older traditional design axle assemblies).\u003csup class=\"superscript\" data-turn-source-index=\"7\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,1,0\"\u003e\u003cb data-path-to-node=\"15,1,0\" data-index-in-node=\"0\"\u003eJeep Models:\u003c\/b\u003e 1997–2006 Wrangler TJ \/ LJ (Rear Dana 44 \u0026amp; Rubicon Front\/Rear Dana 44), 1987–1995 Wrangler YJ (Rear Dana 44), 1984–2001 Cherokee XJ (Rear Dana 44), and classic CJ platforms.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,2,0\" id=\"p-rc_8a35c2d0dfcec00f-153\"\u003e\u003cspan class=\"citation-136\"\u003e\u003c\/span\u003e\u003cb data-path-to-node=\"15,2,0\" data-index-in-node=\"0\"\u003e\u003cspan class=\"citation-136\"\u003eDodge \/ Ram Models:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-136 citation-end-136\"\u003e 1994–2001 Ram 1500, 2500, and 3500 heavy-duty models equipped with a front Dana 44 axle.\u003csup class=\"superscript\" data-turn-source-index=\"8\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,3,0\" id=\"p-rc_8a35c2d0dfcec00f-154\"\u003e\u003cspan class=\"citation-135\"\u003e\u003c\/span\u003e\u003cb data-path-to-node=\"15,3,0\" data-index-in-node=\"0\"\u003e\u003cspan class=\"citation-135\"\u003eChevy \/ GMC Models:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-135 citation-end-135\"\u003e 1960–1980 K10, K20, K10 Suburban, and K5 Blazer models equipped with a front Dana 44.\u003csup class=\"superscript\" data-turn-source-index=\"9\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Spicer","offers":[{"title":"Default Title","offer_id":43563537662026,"sku":"PLAT-SPICER-706031X","price":54.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/5560\/6858\/files\/61POYtmKq3L._AC_SL1500.jpg?v=1778710105","url":"https:\/\/platinumperformanceparts.com\/products\/spicer-706031x-pinion-bearing-kit-1","provider":"Platinum Performance Parts","version":"1.0","type":"link"}