Replacement Clearance or Side Marker Light for a 20321-02 Light
Updated 07/13/2026 | Published 07/07/2026
Products Featured in This Question
Question:
We have a side marker that is missing the lens only. Nothing is broken just missing the red covered lens. The light part number is 20321-02, could you help us locate the right one please. Thank you so much for your assistance on this matter.
asked by: Cheryl D
Expert Reply:
Hey Cheryl. I have a solution for you but your 20321-02 light has been discontinued and there's no replacement lens available for it. I recommend replacing your light with the Trailer Clearance or Side Marker Light w/ Reflector item # MC44RB.
The Trailer Clearance or Side Marker Light item # MC44RB has a red lens and measures 4" wide x 1-1/2" tall x 15/16" thick. It has mounting holes spaced 3" apart on center and uses a simple 2-wire power and ground installation method.
What kind of trailer do you have?
You can add this information, along with any other questions you have, where it says Add Comment.
(click to enlarge)
(click to enlarge)
Product Page this Question was Asked From
Optronics Trailer Clearance or Side Marker Light w/ Reflex Reflector - Incandescent - Red Lens
- Trailer Lights
- Clearance Lights
- Marker
- Rectangle
- Surface Mount
- Non-Submersible Lights
- Incandescent Light
- 4L x 1-1/2W Inch
- Red
- Optronics
more information >
Continue Researching
- Search Results: tounge weight
- Q&A: How To Power a 12V Refrigerator On An RV While Driving
- Shop: Optronics Trailer Clearance or Side Marker Light w/ Reflex Reflector - Incandescent - Red Lens
- Shop: Optronics LED Clearance or Side Marker Light w/ Reflector - 2 Diodes - Rectangle - Amber Lens
- Shop: Optronics LED Trailer Clearance and Side Marker Light w/ Reflex Reflector - 6 Diodes - Amber Lens
- Shop: Trailer Clearance or Side Marker Light w/ Reflector - Incandescent - Rectangle - Amber Lens
- Shop: Thinline LED Trailer Clearance or Side Marker Light - Submerisble - 2 Diodes - Amber Lens
- Shop: Redarc In-Vehicle BCDC Trailer Battery Charger - Single Input - DC to DC - 12V/24V - 12 Amp
- Shop: B&W Digital Tongue Weight Scale w/ LED Screen
- Q&A: LED Replacements for Trailer Clearance Light Part 154A-R and PM-102
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Search Results: trailer hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Shop: Trailer Wiring
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer tires and wheels
- Article: How to Measure for Trailer Hitch Drop
- Search Results: trailer wiring
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Shop: Suspension Enhancement
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Q&A: Does etrailer Carry Furrion Chill Cube w/ Heat Pump to Replace Dometic Duo-Therm
- Shop: Brake Controller
- Video: Measuring To Choose The Right Trailer Axle
- Search Results: trailer jack
- Video: How to Choose a Trailer Brake Controller
- Q&A: Comparing Kenda KR03, KR35, And KR53 Tires
on Trailer Lights
Handyman
7/12/2026
very EZ to replace the whole light. 2 Screws and two wires very EZ to do.