1980-1986 Chevy C10 4x6 Glass H4 Headlight Pair
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I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- 1980 Chevrolet C10 Pickup with 4x6 headlight system
- 1981 Chevrolet C10 Pickup with 4x6 headlight system
- 1982 Chevrolet C10 Pickup with 4x6 headlight system
- 1983 Chevrolet C10 Pickup with 4x6 headlight system
- 1984 Chevrolet C10 Pickup with 4x6 headlight system
- 1985 Chevrolet C10 Pickup with 4x6 headlight system
- 1986 Chevrolet C10 Pickup with 4x6 headlight system
Product Overview
Old square headlights often become dim from corroded reflectors, cracked glass, tired bulbs, or voltage loss in the truck’s wiring. Replacing both sides together keeps the beam appearance consistent while allowing serviceable H4-style bulbs where shown.
The housings occupy the original 4x6 lamp locations and replace compatible H4651 or H4656-format sealed beams. They do not repair a rusty bucket, bent retaining ring, burned connector, or weak charging system.
Measure the lamp, compare high- or low-beam position, three-prong connector, retaining ring, rear clearance, and included bulbs. Some four-headlamp trucks use different high-beam and low-beam pinouts.
Key Features & Performance
- Pair of 4x6 rectangular housings
- Clear glass lenses with diamond-cut reflectors
- Serviceable H4-style design where pictured
- Cross-reference for H4651 and H4656 formats
Replaces Part Numbers
- H4651
- H4656
Common Uses
- Replacing cracked or cloudy sealed beams
- Restoring a C10 after front-end repair
- Correcting mismatched left and right lamps
Technical Specifications
- Product Type: Rectangular headlight housing pair
- Nominal Size: 4x6 inch
- Lens: Clear glass
- Condition: New aftermarket housings
Installation & Fitment
- Disconnect the battery
- Check sockets for heat damage and corrosion
- Confirm pinout before powering the bulbs
- Aim all headlamps after installation
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application that is not shown above. Model year, production date, trim, body style, build location, lighting package, wiring, sensors, and previous repairs can change fitment. Match the original part, reference number, connectors, mounting points, dimensions, and product photos before purchase.
Frequently Asked Questions
Q: Are H4651 and H4656 interchangeable in every position? A: No. Confirm the truck’s high- and low-beam positions and connector pinout.
Q: Are bulbs included? A: Verify the listing photos and package contents.
Q: Why might new housings still look dim? A: Low voltage, poor grounds, worn switches, wrong bulbs, or bad aim can reduce useful light.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: Chevy C10 4x6 headlight pair, 1980 C10 glass H4 conversion, H4651 replacement housing, H4656 diamond cut headlight, square body Chevy dim headlight repair
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.