Anderson E421R Oval Stop/Turn/Tail Trailer Light, Red Incandescent, Fits Curbside or Roadside

The Anderson E421R is a sealed, oval stop/turn/tail light built for boat and utility trailers. It can be installed on either the curbside or roadside of the trailer, and it is legal to mount in either the horizontal or vertical position, giving installers flexibility when working around fenders, frames, or existing wiring runs. The lens is polycarbonate and is sonic welded directly to the housing so the lamp forms a single sealed unit rather than a lens-and-gasket assembly that can loosen over time. The light functions as a combined stop, turn, and tail lamp and uses an incandescent bulb. Installation requires a separate mounting grommet, so the light mounts flush into a grommet-equipped panel rather than surface-mounting with screws. The housing and lens are finished in red to meet standard rear trailer lighting requirements. This is a straightforward, sealed replacement or upgrade light for trailer owners who need a dependable oval tail light that will hold up to outdoor and roadside use.

Specifications

• Brand: Anderson
• Manufacturer Part Number: E421R
• Category: Boat Trailer Tail Light
• Function: Stop, turn, tail
• Shape: Oval
• Lens Material: Polycarbonate
• Lens Color: Red
• Bulb Type: Incandescent
• Mounting: Requires a mounting grommet; mounts horizontally or vertically
• Fit Side: Curbside or roadside (universal)
• Item Dimensions: 10.75 x 5 x 3 inches
• Lens Size: 6.50 x 2.25 inches
• Weight: 1 pound
• UPC: 044464929767
• Country of Origin: China

Fitment

Universal fit for boat and utility trailers; suitable for either the curbside or roadside position.

Replaces (OEM)

No OEM cross-reference numbers are listed for the Anderson E421R.

Frequently Asked Questions

Can the Anderson E421R be mounted on either side of the trailer? Yes, the Anderson E421R oval tail light is designed to be used on either the curbside or roadside of the trailer, so the same part number works for both positions.

Is it legal to mount this light vertically? Both horizontal and vertical mounting are legal positions for the Anderson E421R oval stop/turn/tail light.

What functions does the E421R perform? The E421R combines stop, turn, and tail lighting in a single sealed oval lamp.

What type of bulb does the Anderson E421R use? The Anderson E421R uses an incandescent bulb rather than an LED module.

Does the E421R come with a mounting grommet? No, the Anderson E421R requires a separate mounting grommet for installation; the grommet itself is not included with the light.

What is the lens made of on this trailer light? The lens on the Anderson E421R is polycarbonate, and it is sonic welded to the housing to form a single sealed unit rather than a separate lens and gasket.

What size is the E421R oval tail light? The Anderson E421R has a lens measuring 6.50 by 2.25 inches, with overall item dimensions of 10.75 x 5 x 3 inches.

How much does the E421R weigh? The Anderson E421R oval tail light weighs 1 pound.

What color is the E421R lens and housing? The Anderson E421R is finished in red, matching standard rear trailer lighting requirements.

Is the E421R a universal-fit light or vehicle-specific? The Anderson E421R is a universal-fit oval tail light intended for boat and utility trailers rather than a specific vehicle make or model.

What is the UPC for the Anderson E421R? The UPC for the Anderson E421R oval tail light is 044464929767.