Differential Mounts & Bushings for Audi, BMW, Toyota & Ford

What Does a Differential Mount Do?

A differential mount secures the differential housing to the chassis, subframe or cradle while controlling movement as torque loads and unloads the driveline. Worn factory rubber can contribute to clunks, wheel hop, delayed response and excess driveline movement. A replacement mount or insert can restore control a firmer billet or polyurethane design may sharpen response but can also transmit more noise, vibration and harshness.

Choose the right balance of control and comfort

Daily-driven vehicles usually benefit from a solution that limits unwanted movement without making the cabin unnecessarily harsh. Track, drag and high-power builds may prioritize maximum control. Always review the product’s material, stiffness and intended use before ordering.

Differential Mount Inserts for Audi, BMW and Mitsubishi

Billet differential inserts are designed to fill or reinforce voids in the factory mounting arrangement. Popular applications in this collection include Audi B6, B7, B8, B9 and C7 chassis, BMW F2X models and Mitsubishi Evolution platforms. These parts can reduce differential movement during acceleration, shifting and cornering without requiring the same work as replacing an entire mount.

Confirm chassis and differential position

An Audi S4 or S5 part is not automatically compatible across every generation, and front, lower and rear differential mounting points use different hardware. Match the listed chassis code, model year, transmission and differential location to your vehicle.

Differential Drop Kits for Lifted Trucks and SUVs

A front differential drop kit lowers the differential mounting position on certain independent-front-suspension 4x4s after a suspension lift. The goal is to reduce excessive CV axle angles and help the front driveline operate closer to its intended geometry. Available applications include Toyota Tacoma, Tundra, Sequoia and Land Cruiser platforms.

Does every lifted truck need a diff drop?

No. The answer depends on the vehicle, suspension design, lift height and manufacturer recommendations. Select a kit engineered for the exact application and actual lift configuration; an incorrect drop can create clearance, alignment or driveline problems.

Carrier Bearing and Transfer Case Drop Kits

Carrier bearing drop kits reposition the center support bearing on applicable multi-piece driveshafts to help correct driveline angles after lifting a truck. Transfer case lowering kits serve a related purpose on certain Jeep and Chevrolet applications by changing drivetrain geometry to help address vibration after a lift.

Diagnose vibration before adding parts

Driveline vibration may come from operating angles, worn U-joints, a damaged carrier bearing, wheel or tire issues, or incorrect installation. Inspect the complete system rather than assuming one spacer or bracket will solve every vibration.

Axle U-Bolts and Lift Hardware

This collection also includes axle U-bolts and related suspension hardware for Toyota Tacoma and Tundra, Ford F-150, F-250 and Ranger, Chevrolet Silverado, Dodge Ram and Jeep applications. U-bolts clamp the axle and leaf-spring assembly together, making correct dimensions and torque critical to safe installation.

How do I choose the correct axle U-bolt?

Confirm axle-tube diameter, inside width, leg length, thread size, spring-pack thickness, front or rear position and lift-block height. U-bolts can stretch during tightening, so replace them whenever the vehicle, suspension or hardware manufacturer specifies new fasteners.

Featured Differential Mount and Driveline Brands

• Torque Solution — billet differential inserts and solid-mount solutions for Audi, BMW and Mitsubishi performance platforms.
• Tuff Country — differential drop kits, carrier bearing drop kits and axle U-bolts for lifted trucks and SUVs.
• SuperPro — engineered suspension and driveline correction components, including Toyota Land Cruiser diff-drop hardware.
• Skyjacker — transfer-case lowering kits and axle hardware for Jeep and truck lift applications.
• Innovative Mounts — billet and performance mounting solutions for Honda Civic and S2000 builds.
• Rugged Ridge — Jeep-specific transfer-case and linkage correction hardware.

How to Choose the Correct Differential Mount or Drop Kit

• Enter the exact year, make, model, trim, engine and drivetrain in the vehicle selector.
• Confirm whether the part is for the front, rear, lower or upper mounting position.
• Match chassis codes for Audi and BMW applications.
• Verify differential type, transmission and two-wheel-drive or four-wheel-drive configuration.
• Measure actual lift height before selecting differential, carrier-bearing or transfer-case drop hardware.
• For axle U-bolts, verify tube diameter, width, length, thread and spring-pack dimensions.
• Review expected NVH changes before choosing a billet, polyurethane or solid mount.
• Follow the manufacturer’s torque values and installation sequence.
• Inspect fasteners and driveline behavior after the first drive and after off-road use.

Common Questions About Differential Mounts

What are the signs of a bad differential mount?

Common symptoms can include a clunk when accelerating or shifting, excessive driveline movement, wheel hop, vibration or visible cracking and separation in the mount. Similar symptoms can come from other driveline parts, so inspect the complete system.

Will a stiffer differential mount improve performance?

A firmer mount or insert can reduce unwanted movement and make power delivery feel more immediate. The tradeoff may be additional noise or vibration, especially with solid or billet designs.

Can I install a differential mount insert myself?

Installation difficulty varies by vehicle. Some inserts install with the factory mount in place; other mounts require supporting the differential, removing brackets or lowering nearby components. Use the manufacturer’s instructions and proper support equipment.

What is the difference between a differential mount and a diff drop kit?

A differential mount secures and controls the differential. A diff drop kit changes its position on certain lifted vehicles to improve axle geometry. They solve different problems and are not interchangeable.

Should I replace differential hardware at the same time?

Replace one-time-use or stretched fasteners when the service information requires it. Inspect bushings, brackets, bolts, U-joints, CV axles and nearby mounts while the vehicle is apart.

Why did vibration appear after a lift?

A suspension lift can change CV axle, driveshaft, pinion and carrier-bearing angles. Incorrect torque, worn joints or an unbalanced driveshaft can also contribute. Stop and inspect the vehicle if new vibration appears after installation.

Why Buy Differential Mounts from Black Ops Auto Works?

Black Ops Auto Works helps enthusiasts find application-specific differential mounts, inserts, drop kits and lift-related driveline hardware using detailed vehicle fitment data. Shop parts for street, track, towing and off-road builds, then verify the product listing and manufacturer instructions before installation.

Complete your build with our differentials, axle components, drivetrain parts and suspension upgrades.