{"product_id":"banks-power-aam-11-514-bolt-rear-ram-air-differential-cover-19249-19259-19249-2001-2019-duramax-6-6l-2003-2018-cummins-5-9l-6-7l","title":"BANKS POWER AAM 11.5\"14-BOLT REAR RAM-AIR DIFFERENTIAL COVER 19249\/19259\/19269 | 2001-2019 Duramax 6.6L \u0026 2003- 2018 Cummins 5.9L\/6.7L","description":"\u003cp\u003eBanks started from scratch while sparing no expense in the creation of this differential cover. The team sought to answer the age-old question: \"Do rear differential covers provide any real benefit, or are they just bling?\" After extensive research, Gale and the Banks Engineering Team identified two major issues with aftermarket diff covers: poor airflow and flawed fluid dynamics. These issues are fully addressed in the Banks Ram-Air Differential Cover.\u003c\/p\u003e\n\u003cp\u003eTesting showed that flat-back covers with larger fluid capacities suffer from poor fluid dynamics. The Banks Ram-Air design improves fluid flow to increase fuel economy and extend lubrication life. Cooling performance is 118% better than flat-back competitors at sustained 60mph and 4X better during on-road towing tests.\u003c\/p\u003e\n\u003ch3\u003eConstruction \u0026amp; Design\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA380 aluminum diecast with CNC-machined surfaces\u003c\/li\u003e\n\u003cli\u003eInternal and external cooling fins\u003c\/li\u003e\n\u003cli\u003ePatented Ram-Air scoops for optimized airflow around cooling fins\u003c\/li\u003e\n\u003cli\u003eDry-mount high-pressure silicone O-ring seal (no messy RTV)\u003c\/li\u003e\n\u003cli\u003eIncludes chrome-plated mounting hardware\u003c\/li\u003e\n\u003cli\u003eMagnetic drain plug and 20° angled magnetic fill plug for easy filling\u003c\/li\u003e\n\u003cli\u003e1\/2\" stainless steel sight glass for fluid level monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRam-Air System\u003c\/li\u003e\n\u003cli\u003eMagnetic Fill Plug\u003c\/li\u003e\n\u003cli\u003eLubricant Raceway\u003c\/li\u003e\n\u003cli\u003e1\/8” NPT Sensor Port\u003c\/li\u003e\n\u003cli\u003eDirectional Fluid Guides\u003c\/li\u003e\n\u003cli\u003eInternal Heat Absorption Fins\u003c\/li\u003e\n\u003cli\u003eClass-Leading Heat Rejection\u003c\/li\u003e\n\u003cli\u003ePrecision Fit Machined Surface\u003c\/li\u003e\n\u003cli\u003eSight-Glass with Contrast Screen\u003c\/li\u003e\n\u003cli\u003eDie-Cast A380 Aluminum Construction\u003c\/li\u003e\n\u003cli\u003eIncludes 304 Stainless-Steel Hardware\u003c\/li\u003e\n\u003cli\u003eRadiused Ports for Smoother Fluid Flow\u003c\/li\u003e\n\u003cli\u003eDoes Not Sacrifice Ground Clearance\u003c\/li\u003e\n\u003cli\u003eBreak-Away Design Protects Cover if Snagged\u003c\/li\u003e\n\u003cli\u003eClears Spare Tire Heat Shield, Panhard Bars, and Other Components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWeight: 11.7 lbs\u003c\/li\u003e\n\u003cli\u003eExternal Heat Radiation Fin Count: 24\u003c\/li\u003e\n\u003cli\u003eInternal Heat Absorption Fin Count: 26\u003c\/li\u003e\n\u003cli\u003eDimensions: 14.2 in x 13.3 in x 3.8 in\u003c\/li\u003e\n\u003cli\u003eExternal Heat Radiation Surface Area: 533.782 in²\u003c\/li\u003e\n\u003cli\u003eInternal Heat Absorption Surface Area: 119.882 in²\u003c\/li\u003e\n\u003cli\u003eTotal External Surface Area: 808.81 in²\u003c\/li\u003e\n\u003cli\u003eTotal Internal Surface Area: 215.78 in²\u003c\/li\u003e\n\u003cli\u003eFasteners: 14 x Stainless Steel M8-1.25 Flange Hex Bolts\u003c\/li\u003e\n\u003cli\u003eInternal Volume: ~4.0 Qts (Check OEM Owners Manual)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFluid Dynamics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLow fluid aeration for longer fluid life\u003c\/li\u003e\n\u003cli\u003eCover mates flush with differential housing for smooth flow\u003c\/li\u003e\n\u003cli\u003eRing gear raceway controls fluid flow to pinion and bearings\u003c\/li\u003e\n\u003cli\u003eAxle tube lubricant guides direct lube without overfilling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOil Service\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMagnetic drain plug\u003c\/li\u003e\n\u003cli\u003eMagnetic fill port plug\u003c\/li\u003e\n\u003cli\u003e20° angled fill port for easy access\u003c\/li\u003e\n\u003cli\u003eNo need to remove cover to change fluid\u003c\/li\u003e\n\u003cli\u003eFill level ~4.0 Qts (varies by model year)\u003c\/li\u003e\n\u003cli\u003e1\/2-inch sight glass with contrast screen and high-quality seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplication Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDoes not fit Ram trucks with airbag suspension alone\u003c\/li\u003e\n\u003cli\u003eSway bar spacers (#19249-2) required on 2014-2024 Ram 2500\/3500 trucks with OEM sway bar\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Banks Power","offers":[{"title":"Raw Aluminum","offer_id":51911261061403,"sku":"19259","price":375.0,"currency_code":"USD","in_stock":true},{"title":"Black Ops","offer_id":51911261094171,"sku":"19269","price":395.0,"currency_code":"USD","in_stock":true},{"title":"Textured Black Powder Coat","offer_id":51911261126939,"sku":"19249","price":395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2026-03-18at11.38.54AM.png?v=1773855826","url":"https:\/\/wwmperformance.com\/products\/banks-power-aam-11-514-bolt-rear-ram-air-differential-cover-19249-19259-19249-2001-2019-duramax-6-6l-2003-2018-cummins-5-9l-6-7l","provider":"WWM Performance","version":"1.0","type":"link"}