Peterbilt 389 Mirrors & Acc.

Frequently Asked Questions About Peterbilt 389 Mirrors & Acc.

Will these mirrors and mirror accessories fit my Peterbilt 389 without modification?

Most mirrors and mounting components in this category are designed to match the factory arm and mounting configuration used on the Peterbilt 389, but fit can vary depending on the model year and whether your truck has the factory hood-mounted or door-mounted mirror setup. Check the product listing for specific year ranges and mounting style before ordering, and compare your existing mirror arm and bracket style to the images provided.

What materials and finish options are available for these mirrors?

You will typically find mirror heads, covers, and brackets available in chrome-plated steel, stainless steel, and black powder-coated finishes. Chrome and stainless options are popular for matching factory bright-trim packages, while powder-coated or black finishes are often chosen for blacked-out or custom builds. Stainless and chrome pieces generally hold up well to weather exposure but still require regular cleaning to prevent water spotting and road film buildup.

How do I install a replacement mirror or mirror arm on my 389?

Installation typically involves removing the factory bolts or fasteners securing the existing mirror head or arm, then bolting the new component into the same mounting points using factory hardware or the hardware included with your purchase. Most heated or powered mirrors will also require reconnecting existing wiring harness connectors, so it helps to note how your factory wiring is routed before removing the old mirror. If a wiring diagram is not included, consult your truck's service manual or a qualified technician for guidance.

Do heated or powered mirrors require any special wiring work?

Heated and remote-controlled mirrors generally use factory-style plug-in connectors that match the existing wiring harness on trucks originally equipped with those features. If your truck did not come with heated or powered mirrors from the factory, additional wiring, a switch, and a power source may need to be added, so it is worth confirming your truck's original equipment before purchasing an upgraded mirror.

How do I know which mirror or bracket matches my truck's specific setup?

Because the Peterbilt 389 was produced over many years with different mirror configurations, the safest approach is to compare the part number or physical dimensions listed on the product page to your current mirror, arm, or bracket. If you are unsure, our customer service team can help confirm compatibility based on your truck's year and current mirror setup before you order.