What is the main benefit of installing these motor mount inserts?

These inserts fill the empty spaces in your factory motor mounts, which significantly reduces engine movement. This results in a more direct feel when you accelerate or brake, and can improve throttle response.

Will these inserts make my car vibrate more?

Polyurethane inserts are designed to firm up the engine mounts, which can introduce a slight increase in vibration compared to stock. However, they are generally less harsh than full solid mounts and offer a good compromise for improved performance.

What material are these inserts made from?

The inserts are constructed from Prothane's signature polyurethane, a well-known material for its durability and ability to withstand the stresses of engine operation while offering some vibration dampening.

Prothane 90-03 Mitsubishi Eclipse Motor Mount Insert Black 1

Name: Prothane 90-03 Mitsubishi Eclipse Motor Mount Insert - Black
Brand: Prothane
SKU: prothane-prothane-90-03-mitsubishi-eclipse-motor-mount-insert-black-t14-98212
Price: 41.87 USD
Availability: BackOrder

Prothane 90-03 Mitsubishi Eclipse Motor Mount Insert - Black

$41.87

On Backorder — Expected to ship by May 9, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Prothane 90-03 Mitsubishi Eclipse Motor Mount Insert - Black. Reduces engine movement for improved throttle response.

Key Features

Fits 1990-2003 Mitsubishi Eclipse.
Reduces engine movement for improved throttle response and stability.
Made from durable polyurethane material.
Designed to fill voids in factory motor mounts.
Black color.

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Product Details

If you're looking to firm up the feel of your 1990-2003 Mitsubishi Eclipse's drivetrain, these motor mount inserts from Prothane are a solid option. They're designed to fill the voids in your factory motor mounts, which helps to reduce excessive engine movement under acceleration and braking. This can lead to a more direct connection between your engine and the chassis, making throttle inputs feel sharper and more responsive.

These inserts are made from Prothane's well-known polyurethane material, which offers a good balance of durability and vibration dampening. They're a popular choice for enthusiasts who want to improve their car's performance without going to a full solid mount, which can transmit a lot more vibration into the cabin. Installation typically involves removing the factory motor mount, pressing these inserts into the empty spaces, and then reinstalling the mount. It's a straightforward modification that makes a noticeable difference in how the car feels when you get on the gas.