aFe Street AAM 9.25 Front Diff Cover - Ram Raw

Axle-specific differential protection

The aFe 46-70400 Street Series raw cover fits the specified AAM 9.25 front differential.

Key Features

• Cast aluminum with reinforcing ribs, internal/external cooling fins and raw finish with machined fins.
• Magnetic drain plug and plain 3/4-inch NPT top fill plug and plain 1-inch NPT side plug.
• Factory-level calibration port; optional sight glass for the raw cover.
• Manufacturer states this product does not require a CARB EO number. This statement applies to the cover itself.

Fitment

46-70400: The exact current manufacturer details identify an AAM 9.25-inch 12-bolt FRONT axle cover for Ram 2500/3500 2013-2023, despite the manufacturer page title/URL calling it rear. The linked complete manual explicitly identifies front and lists Ram 2500 2014-2018 and Ram 3500 2013-2018 with 5.7L/6.4L gas or 6.7L diesel engines. Current family coverage and exact-part named retailer tables are distinguished from that older manual heading; the 2013 Ram 2500 overlap remains conditional on the actual axle. This is for the specified driven front axle, not a rear cover or a blanket 2WD application. Retain named-year gaps and confirm actual axle, build and clearance before ordering.

Specifications

What's Included

• One raw Street Series cast-aluminum front cover with machined fins, twelve M8 x 1.25 x 30 socket-head screws, twelve flat washers, one M12 x 1.25 magnetic drain plug with crush washer, one 1/8-inch NPT calibration plug, and plain 3/4-inch NPT top fill plug and plain 1-inch NPT side plug. The sight glass and deep-reach magnetic top fill plug are optional accessories, not supplied raw-kit parts.
• The manual reuses the original factory gasket. Inspect its condition; a new gasket, RTV tube, gear-oil fill, axle additive, tools, filter and coupler are not established in the bill of materials. The retailer six-bolt/new-gasket box summary conflicts with this exact twelve-screw manual and is not adopted. Select axle lubricant and additive by the actual vehicle specification.

Related Parts

Explore aFe Power drivetrain parts. Select the exact front and rear covers separately by axle identification.

Frequently Asked Questions

Raw Street Series cast-aluminum cover for the AAM 9.25 front axle.

The exact current manufacturer details identify an AAM 9.25-inch 12-bolt FRONT axle cover for Ram 2500/3500 2013-2023, despite the manufacturer page title/URL calling it rear. The linked complete manual explicitly identifies front and lists Ram 2500 2014-2018 and Ram 3500 2013-2018 with 5.7L/6.4L gas or 6.7L diesel engines. Current family coverage and exact-part named retailer tables are distinguished from that older manual heading; the 2013 Ram 2500 overlap remains conditional on the actual axle. This is for the specified driven front axle, not a rear cover or a blanket 2WD application. Retain named-year gaps and confirm actual axle, build and clearance before ordering.

Plain 3/4-inch npt top fill plug and plain 1-inch npt side plug. The manufacturer page heading and URL say rear, but its explicit axle details and the full shared manual identify this as an AAM 9.25 front cover. Follow the exact manual for the installed axle and boxed revision.

Twelve M8 x 1.25 x 30 socket-head screws and twelve flat washers; these are the mounting fasteners listed by this exact manual.

The manual reuses the original factory gasket. Inspect its condition; a new gasket, RTV tube, gear-oil fill, axle additive, tools, filter and coupler are not established in the bill of materials. The retailer six-bolt/new-gasket box summary conflicts with this exact twelve-screw manual and is not adopted. Select axle lubricant and additive by the actual vehicle specification.

Fill with the correct new gear oil until it runs from the 1/8-inch calibration port, about 3 quarts in the manual’s illustrated installation. Use the calibrated level rather than a universal quantity; lifted trucks with a rotated axle need verification of the correct oil level.

Tighten the twelve cover mounting screws to 12-16 ft-lb in a crisscross pattern. Separately, the manual’s track-bar flag-nut clearance adjustment specifies 324 ft-lb for the track-bar bolt with the truck resting on the ground in a static position. This value is not for cover screws, the drain plug or pipe plugs. No numerical drain-plug torque or NPT turn count is given.

Block the tires on a flat dry surface. Remove the lower eleven cover bolts, loosen the single remaining top bolt to drain, then remove the cover and preserve the OEM gasket. Clean and inspect the housing without gouging or rounding its sealing surface. Fit the gasket and cover with all twelve supplied screws and washers. Check the track-bar flag nut: if it is not pinned against the frame rail as shown, re-clock it using the exact manual’s on-ground static-position procedure, then tighten the track-bar bolt to its separately specified value. Install the drain plug/crush washer and the correct finish-specific side/fill plugs, fill by the calibration port, apply Teflon pipe sealant where directed and inspect clearance and leaks.

Installation Instructions

Read the current manufacturer listing for 46-70400 and full exact-family installation manual.

Block the tires on a flat dry surface. Remove the lower eleven cover bolts, loosen the single remaining top bolt to drain, then remove the cover and preserve the OEM gasket. Clean and inspect the housing without gouging or rounding its sealing surface. Fit the gasket and cover with all twelve supplied screws and washers. Check the track-bar flag nut: if it is not pinned against the frame rail as shown, re-clock it using the exact manual’s on-ground static-position procedure, then tighten the track-bar bolt to its separately specified value. Install the drain plug/crush washer and the correct finish-specific side/fill plugs, fill by the calibration port, apply Teflon pipe sealant where directed and inspect clearance and leaks.

Tighten the twelve cover mounting screws to 12-16 ft-lb in a crisscross pattern. Separately, the manual’s track-bar flag-nut clearance adjustment specifies 324 ft-lb for the track-bar bolt with the truck resting on the ground in a static position. This value is not for cover screws, the drain plug or pipe plugs. No numerical drain-plug torque or NPT turn count is given.

Fill with the correct new gear oil until it runs from the 1/8-inch calibration port, about 3 quarts in the manual’s illustrated installation. Use the calibrated level rather than a universal quantity; lifted trucks with a rotated axle need verification of the correct oil level.

46-70400: The manufacturer page heading and URL say rear, but its explicit axle details and the full shared manual identify this as an AAM 9.25 front cover. Follow the exact manual for the installed axle and boxed revision.