Peterbilt 375/377 Shift Plates

Frequently Asked Questions About Peterbilt 375/377 Shift Plates

Will a shift plate fit my transmission setup?

Shift plates are designed to match a specific shift pattern, such as a 9, 10, 13, 15, or 18-speed configuration. Before ordering, check the plate's listed speed and pattern against your transmission's actual shift pattern to make sure they match. If you're not sure what pattern your truck uses, your current shift plate or the shift knob boot area usually shows the pattern, or you can check with your transmission manufacturer's documentation.

What materials and finishes are these shift plates available in?

Most shift plates for the Peterbilt 375/377 are made from stainless steel or chrome-plated metal, and some are offered in a plain or brushed finish. Stainless and chrome options tend to hold up well against wear from daily use and are easy to wipe down, though the finish can show scratches over time with heavy use of the shifter.

How do I install a new shift plate?

Installation typically involves removing the shift knob and boot, then lifting off the old plate, which is usually held in place by the shifter boot and a retaining ring or small screws depending on the design. The new plate slides over the shifter shaft in the same orientation, and the boot and knob are reinstalled on top. No special tools are generally required, but having a small flathead screwdriver on hand can help with stubborn retaining clips.

Will this shift plate work with my aftermarket shift knob?

Most shift plates are designed to work with a standard shifter shaft and are not tied to a specific knob brand, so they should work with most aftermarket knobs as long as the knob's base opening fits over the shifter shaft properly. If you're using an oversized or unusually shaped knob, double check the fit before finalizing your purchase.

Is the shift pattern engraving durable and easy to read?

Engraved or stamped shift patterns are meant to hold up under normal daily use, but visibility can fade over years of exposure to sunlight, grease, and repeated handling. Choosing a plate with deeper engraving or contrasting fill in the lettering can help keep the pattern legible longer.