Sill Plate Backing Panel Board for 1971-1973 Ford Mustang
This backing panel restores the proper foundation beneath the sill plate, helping the trim sit flat while keeping the door opening clean and factory-correct.
- Eliminate uneven or loose sill plates caused by warped or missing backing boards
- Restore the clean, solid threshold appearance your classic originally had
Upgrade your 1971-1973 Ford Mustang with our Sill Plate Backing Panel Board for durable classic car body panel replacement. Restore your vintage ride today! Shop now.
Specifications:
- Placement on Vehicle: Rear
- Material: Jute
- Number of Pieces: 2
- Vehicle Fitment: Please see vehicle compatibility list
Q: What is a sill plate backing panel board?
A sill plate backing panel board is a rigid support panel installed underneath the door sill plate to provide structural backing and a finished appearance.
Q: Does the sill plate backing board fit all vehicles?
No, these boards are vehicle-specific and shaped to match door openings.
Q: What are some alternative names for a Sill Plate Backing Panel Board?
This panel may also be referred to as:
- Door Sill Backer Board
- Threshold Backing Panel
- Sill Plate Support Board
Terminology may vary by manufacturer.
Q: Does the sill plate backing board require special hardware?
Most reuse original factory fasteners.
Q: What are sill plate backing panel boards made of?
They are typically made from fiberboard, MDF, or molded composite materials.
Designed for rigidity and long-term durability.
Why You Should Ride With Us?
You can purchase this product directly from Collectors Auto Supply, where we specialize in classic car restoration parts and accessories. Finding the perfect part for your classic car can be difficult, and even frustrating. And let us be honest. What makes it worse is a general lack of customer love in the industry. That is why we are here, and that is why we are different. We are car people just like you, and we know what you need. And if we do not already know it, we're listening. So, contact us if you need help finding a part, or have an idea for how to improve our website, or anything else. Or if you want to do it the old-fashioned way, give us a call at 1 (800) 414-4462.
- Part Number:
- M290
- Manufacturer Part Number:
- M290
- Mounting Hardware Included:
- No
- Material:
- Jute
- Note 1:
- Use Under Rug
- Base Material:
- Jute
- Number of Pieces:
- 2
- color:
- Gray
