Description
ENGINE MOUNT
Part Number: F0516401C
Direct replacement (cross ref) for 05-16401.
Product Overview
This engine mount supports the engine while helping absorb vibration and movement between the engine and chassis. It replaces OEM part 05-16401 and is used on compatible heavy-duty truck applications.
Engine mounts deal with constant weight, torque, road shock, and vibration every time the truck is running. Over time, the rubber inside the mount starts breaking down, the mount weakens, and engine movement becomes more noticeable. Some drivers first notice it as extra vibration in the cab, while others hear clunking when accelerating or shifting.
A bad engine mount can create problems far beyond just a rough ride.
What the Part Does
The engine mount keeps the engine properly positioned in the chassis while still allowing controlled movement during operation.
Without mounts, engine vibration would transfer directly into the frame and cab. The mount cushions that move and protect surrounding components like hoses, exhaust piping, wiring, drivetrain connections, etc.
It also helps maintain correct driveline alignment under load.
Common Problems This Part Solves
A worn engine mount can cause:
- Excessive engine vibration
- Clunking during acceleration or shifting
- Engine movement under load
- Misaligned exhaust or driveline components
- Added stress on hoses and wiring
In severe cases, broken mounts can allow enough engine movement to damage nearby parts or create contact with the frame. Oil contamination and constant heavy loads often speed up mount failure.
Why Replacement Matters
Ignoring a bad engine mount usually leads to more repairs later. Excess movement puts strain on surrounding components that were never designed to carry that load.
Replacing the mount restores engine stability, reduces vibration, and helps prevent damage to exhaust connections, driveline components, and cooling hoses.
For trucks running long miles or hauling heavy loads daily, solid engine support matters.
Compatibility and Fitment
This engine mount replaces OEM part number 05-16401. Always verify engine application, mounting location, and truck compatibility before ordering. Engine mounts can vary depending on engine setup and chassis configuration.
Installation and Service Notes
The engine must be properly supported before removing the old mount. Installation typically involves unbolting the mount from the frame and engine bracket, then positioning the replacement correctly before tightening the hardware to spec.
While replacing the mount, inspect nearby brackets, hoses, and surrounding mounts for wear. If one mount has failed badly, the others may also be weakened.
This part is commonly serviced alongside suspension-related parts like a Torque Rod Assembly when chasing vibration or drivetrain movement issues.
Use Case
Commonly used during vibration repairs, drivetrain service work, and high-mileage maintenance on trucks showing excessive engine movement or mount deterioration.
About Us
We’re a family-owned group of Peterbilt dealerships dedicated to getting you the parts you need quickly and affordably. Whether you’re looking for Paccar OEM parts, reliable aftermarket replacements, or popular upgrades like seats and filters, we make it easy to keep your truck running and on the road. If you don’t see what you need online, just give us a call or send an email — chances are we can get it. We pride ourselves on fast service, fair prices, and being a partner you can depend on when downtime isn’t an option.
