{"product_id":"spicer-2-2-1379-flange-yoke","title":"Spicer 2-2-1379 1310 Series 4-Bolt Flange Yoke (4.250\" Large Ford Bolt Circle, 2.000\" Female Pilot)","description":"\u003cp data-path-to-node=\"7\"\u003eEliminate high-speed driveline vibrations, complete your rear-end axle swap correctly, and restore maximum rotational power to your tires with this genuine \u003cb data-path-to-node=\"7\" data-index-in-node=\"156\"\u003eSpicer 1310 Series 4-Bolt Flange Yoke\u003c\/b\u003e. Engineered as a high-durability original equipment manufacturer (OEM) component by Dana, this premium adapter flange (\u003cb data-path-to-node=\"7\" data-index-in-node=\"313\"\u003ePart Number: 2-2-1379\u003c\/b\u003e) provides the exact structural fitment required to mate a traditional u-joint driveshaft to a factory Ford companion pinion flange.\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003eOn rear-wheel-drive cars, muscle cars, and light-duty trucks, the rear axle's pinion companion flange acts as the primary rotational input into the differential gears. When building a custom driveshaft, converting an old vehicle to a modern Ford 8.8-inch rear end, or refreshing a worn factory driveline, finding an exact match for the companion flange is critical. Over decades of service or high-torque acceleration on the drag strip, a vehicle's original flange yoke can suffer structural fatigue, warped ears, or deep rusting in the snap ring grooves. A compromised or poorly balanced yoke allows the universal joint caps to shift out of alignment, introducing loose backlash into your drivetrain. This mechanical play results in a harsh clunking sound when shifting gears and an aggressive, low-frequency chassis vibration at highway speeds. Replacing it with this authentic, pre-balanced Spicer steel forging resolves this play and prevents catastrophic on-road component failure.\u003c\/p\u003e\n\u003cp data-path-to-node=\"9\"\u003ePrecision-cast from premium micro-alloy structural steel and balanced to exact factory blueprint tolerances, the 2-2-1379 features a \u003cb data-path-to-node=\"9\" data-index-in-node=\"133\"\u003e4.250-inch diagonal bolt circle configuration\u003c\/b\u003e with \u003cb data-path-to-node=\"9\" data-index-in-node=\"184\"\u003efour drilled 0.484-inch holes\u003c\/b\u003e tailored for the large factory Ford mounting pattern. It relies on a precision-machined \u003cb data-path-to-node=\"9\" data-index-in-node=\"302\"\u003e2.000-inch female pilot register\u003c\/b\u003e to guide the yoke tightly over the pinion flange stub, guaranteeing flawless concentric alignment and completely mitigating rotational runout. Dimensioned explicitly for the globally trusted \u003cb data-path-to-node=\"9\" data-index-in-node=\"526\"\u003e1310 Series driveline architecture\u003c\/b\u003e, it utilizes an outside snap ring (OSR) layout designed to securely cradle standard 1.062-inch diameter universal joint bearing caps with a 3.219-inch width.\u003c\/p\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eComponent Highlights:\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\"\u003e\u003cb data-path-to-node=\"11,0,0\" data-index-in-node=\"0\"\u003eLarge Ford 8.8\" Integration Essential:\u003c\/b\u003e Engineered specifically to bolt directly onto the large-pattern factory pinion flanges found on full-size Ford vehicles, Mustang Cobras, and 8.8-inch axle swaps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e\u003cb data-path-to-node=\"11,1,0\" data-index-in-node=\"0\"\u003eFlawless Rotational Alignment:\u003c\/b\u003e Outfitted with a precision-bored 2.000-inch female center pilot to lock flawlessly onto companion flanges, eliminating undercarriage harmonics and protecting your internal pinion bearings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,2,0\"\u003e\u003cb data-path-to-node=\"11,2,0\" data-index-in-node=\"0\"\u003eGenuine Spicer Forged Steel:\u003c\/b\u003e Cast from high-tensile steel alloy and heat-treated to maximize grain density, ensuring the yoke ears resist spreading under heavy torque spikes or sudden acceleration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,3,0\"\u003e\u003cb data-path-to-node=\"11,3,0\" data-index-in-node=\"0\"\u003ePre-Balanced Performance:\u003c\/b\u003e Machined to strict factory weight distribution metrics to guarantee smooth, vibration-free performance that reduces driver cockpit fatigue.\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\"\u003eDrivetrain \u0026amp; Dimensional Specifications:\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\"\u003eDriveline Series Architecture:\u003c\/b\u003e 1310 Series (3.219\" cap-to-cap snap ring span | 1.062\" bearing cap diameter).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,1,0\"\u003e\u003cb data-path-to-node=\"13,1,0\" data-index-in-node=\"0\"\u003eFlange Configuration Style:\u003c\/b\u003e Rectangular\/Square 4-Bolt Flange.\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\"\u003eBolt Circle Diameter (BCD):\u003c\/b\u003e 4.250 inches (Measured diagonally).\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\"\u003eHole Spacing (Center-to-Center):\u003c\/b\u003e 3.005 inches (Horizontal \u0026amp; Vertical).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,4,0\"\u003e\u003cb data-path-to-node=\"13,4,0\" data-index-in-node=\"0\"\u003eBolt Hole Diameter:\u003c\/b\u003e 0.484 inches (Drilled for 12 mm or 7\/16\" 12-point bolts).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,5,0\"\u003e\u003cb data-path-to-node=\"13,5,0\" data-index-in-node=\"0\"\u003ePilot Register Diameter \u0026amp; Type:\u003c\/b\u003e 2.000 inches (Female Pilot \/ F).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,6,0\"\u003e\u003cb data-path-to-node=\"13,6,0\" data-index-in-node=\"0\"\u003eCenterline of Joint to Flange Face:\u003c\/b\u003e 1.625 inches.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,7,0\"\u003e\u003cb data-path-to-node=\"13,7,0\" data-index-in-node=\"0\"\u003eFlange Swing Diameter:\u003c\/b\u003e 5.219 inches.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,8,0\"\u003e\u003cb data-path-to-node=\"13,8,0\" data-index-in-node=\"0\"\u003eCompatible U-Joint Kits:\u003c\/b\u003e Spicer 5-153X (Greaseable), 5-1310X (Non-Greaseable), or 5-3613X (Coated for Aluminum Shafts).\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\"\u003ePrimary Vehicle \u0026amp; Custom Applications:\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\"\u003e\u003cb data-path-to-node=\"15,0,0\" data-index-in-node=\"0\"\u003eFord 8.8-Inch Rear End Swaps:\u003c\/b\u003e The industry-standard adapter yoke for installing a 1310-series custom or Jeep driveshaft into a Ford 8.8-inch rear end setup (commonly sourced from 1995–2004 Ford Explorer, Mustang, Ranger, and full-size truck platforms).\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\"\u003eFord Vehicles:\u003c\/b\u003e Fits various classic and modern rear-wheel-drive Ford light trucks, SUVs, and muscle cars utilizing the large-pattern 4-bolt companion flange.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Spicer","offers":[{"title":"Default Title","offer_id":43562009034826,"sku":"PLAT-SPICER-2-2-1379","price":77.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/5560\/6858\/files\/12_011cd297-c9e3-4b5f-a1d0-f061251250d2.jpg?v=1777681825","url":"https:\/\/platinumperformanceparts.com\/products\/spicer-2-2-1379-flange-yoke","provider":"Platinum Performance Parts","version":"1.0","type":"link"}