Yukon Gear & Axle  |  SKU: YUKYDAF9-370YGL-31

Yukon Gear Dropout Assembly for Ford 9in Differential w/Grizzly Locker 31 Spline 3.70 Ratio

Regular price $ 1,39989

Can I pick up my order or have it installed at your shop?

Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.

How do I know if this part fits my vehicle?

Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.

What if I need to return a product or it’s defective?

Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)

What's the lead time on custom or fabricated parts?

Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.

Description

Yukon dropout assemblies are built by expert Yukon technicians and come complete, properly shimmed and backlashed to spec. All you do is install the third member into your diff housing, bolt on the diff cover, add fluid, and roll. This unit features a nodular iron case which improves rigidity and power handling, reducing deflection for consistent gear contact and a long service life. This assembly is upgraded with a Yukon Grizzly Locker for maximum traction and performance.

  • Fits Ford 9” differential
  • Complete, fully assembled dropout
  • 3.70 gear ratio
  • 31 spline
  • Upgraded with a Yukon Grizzly Locker
  • Does not include yoke

Compatible Make / Model
Ford E-100 Econoline (1969-1983)
Ford Falcon (1960-1970)
Ford F-100 (1957-1983)
Ford Maverick (1970-1977)
Ford LTD (1965-1979)
Ford Bronco (1966-1986)
Ford Thunderbird (1955-1979)
Ford Ranchero (1957-1979)
Ford Galaxie (1959-1967)
Ford Mustang (1965-1973)
Ford Fairlane (1957-1970)
Ford Galaxie 500 (1968-1974)
Ford F-150 (1975-1987)
Ford E-150 Econoline (1979-1988)
Ford Gran Torino (1972-1976)
Ford E-200 Econoline (1969-1974)
Ford E-250 Econoline (1975-1980)
Ford Granada (1975-1979)
Lincoln Continental (1958-1979)
Lincoln Mark III (1968-1971)
Mercury Cougar (1967-1979)
Mercury Comet (1964-1977)
Mercury Grand Marquis (1975-1980)