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8. Install the retention hook to secure the driver 
side loor mat from any movement. Follow 
installation steps a, b, and c below.

a) Use a #3 Phillips screwdriver to remove the 
screw from the transmission cover shown below 
in Figure 6.

b) Locate the retention hook; poly spacer and 
¼”x 1.75” machine screw; shown in Figure 
7. Insert the screw through the hole in the 
retention hook and place the black poly spacer 
on the bolt below the hook.

c) Insert the hook assembly through the 
transmission cover and tighten using a #3 
Phillips screwdriver. Orient the loor mat hook 
so it points straight toward the gearshift as 
shown in Figure 8.

9. Install the driver side loor mat and engage 
it into the retention hook. The driver mat must 
be pushed all the way forward so the front lip 
is makes full contact with the lower dashboard 
kick panels.  Nest the left rear edge of the 
passenger mat over the top of the right rear 
edge of the driver mat.

10. Pull the driver side loor mat to the left 
to make sure that the retention hook is fully 
engaged

and that the mat is securely fastened to the 

loor. If the hook is not functioning properly or 
the mat cannot be securely installed, do not 
use a Minimizer loor mat on the driver side of 
the vehicle.

11. FAILURE TO PROPERLY INSTALL THE 
RETENTION HOOK FOR THE DRIVER SIDE FLOOR 
MAT MAY ALLOW THE MAT TO SHIFT, WHICH MAY 
INTERFERE WITH PROPER FUNCTIONING OF THE 
VEHICLE’S PEDALS, POTENTIALLY RESULTING IN 
LOSS OF CONTROL OFTHE VEHICLE AND SERIOUS 
INJURY OR DEATH.

12. Move the accelerator, brake, and clutch 
pedals through their full range of motion to 
conirm there is no interference with the 
Minimizer loor mat.

13. Prior to operating the vehicle, read the 
Safety Instructions for Vehicle Operation.

PETERBILT FLOOR MAT KIT SPECIFICATIONS:

• Kit FKPB4B shown in Figure 1 is compatible 
with Peterbilt 378, 379, 385, 357 trucks model 
years 2006-2007.  

• 

Trucks equipped with a factory thermos 

holder require hand trimming of the center mat.  
A raised trim line is molded into the loor mat to 
use as a guide and for liquid containment. 

• 

Passenger side loor mat are not compatible 

with a ixed base passenger seat with under 
seat battery storage. See Figure 2 below for 
photo seat with battery storage.

1. Remove other loor mats from the vehicle 
before installing Minimizer loor mats.

2. Install the Minimizer loor mats right side up, 
with the Minimizer logo visible.

3. Each Minimizer loor mat is contoured to it 
a particular location in the vehicle and may be 
used safely only in that location.

4. The Minimizer loor mat package contains 
one driver mat, one passenger mat and one 
center mat.

5. Verify if the truck is equipped with a 
factory thermos holder between the driver 
and passenger seat as shown in Figure 3. 
If no thermos holder is present, install the 
center mat so the logo reads from left to right 
when facing forward in the cab. If the truck is 
equipped with a thermos holder, use a utility 
knife to trim the red shaded portion of the 
center mat as shown in Figure 4.

6. For cases where a ire extinguisher is 
mounted behind the driver seat, the left rear 
corner of the center mat shaded in yellow may 
be trimmed to allow for clearance.

7. Next install the mat for the passenger side of 
the vehicle as shown in Figure 5.

Figure 4 -  Trimming Diagram

Figure 5 -  Passenger Mat Fit

Figure 3 -  Factory Thermos 

Figure 8 - Proper Hook Orientation

Figure 6 - Screw Removal

Figure 7 - Hook and Spacer Assembly

Figure 1 -  KIT FKPB4B Contents

Figure 2 -  Passenger Seat with Battery Storage

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