5x7 LED Headlamp 27450C

Five-by-seven LED headlamp beam

Truck-Lite offers the 27450C as a rectangular five-by-seven LED headlamp replacement for Class 8 cabs that still use that sealed-beam footprint. Headlamps are safety equipment: scatter, cutoff, and dim low beams show up as driver complaints long before a lamp fails completely.

Price is $98.00 USD before tax. Published weight is 3.2 lb per unit. Order pairs when you want matched color temperature across both sides of the nose.

Road-ready lamp function

Bench brightness does not prove aim. Mount the lamp, set aim per the chassis maker procedure or your fleet alignment policy, and verify high and low beams on a wall target. LED replacements can change reflector behavior if the bucket is cloudy or mis-aimed from a prior curb strike.

Check DRL integration if your harness expects a specific pin layout on multiplexed fronts. A lamp that works on high but not low often means a ground lift under load.

• Replace cracked buckets that flex and change aim every bump.
• Clean ground studs at the radiator mount when corrosion appears.
• Confirm harness length before you tension zip ties on sharp bracket edges.
• Document aim readings on the work order for audit trails.

Freightliner, Kenworth, Mack, Peterbilt rows

The fitment table on this page lists those makes with model and year rows above this prose. Headlamp doors, visor depth, and fairing cutouts still change how a five-by-seven sits in the opening.

Match the removed lamp number, connector style, and VIN build data before install. We describe compatibility; technicians confirm on the vehicle.

Email front-end photos to support@aonetruckauto.com with VIN when the old lamp shattered. Compare candidates on the fitment guide.

Stamp and shelf line

When invoices reference Truck-Lite 27450C, compare the label on the removed unit. Shelf stock fulfills as SKU the cart listing at $98.00 each before tax.

Night driving and glare

Fleets switching to LED should coach drivers on glare feedback from oncoming traffic. Proper aim matters more than raw lumen marketing. Replace both sides when one lamp yellowed from age so beam color matches.

Shipping and returns awareness

Glass and lens cracks belong in photos at receiving. Read returns and refunds before installing on a speculative order.

DOT visibility and driver feedback

Drivers notice headlamp issues first on unlit rural lanes. Streaks in the lower sweep zone hide deer and merge taper markers. Aim checks belong in PM, not only after a failed inspection.

Fog and snow reflect scatter back into the cab when aim is too high. Train drivers to use fog lamps correctly when equipped, rather than relying on high beams that worsen glare.

Harness repair boundaries

When a headlamp fails after a frontal repair, inspect harness length and pinch points near the hood hinge. Extension harnesses exist; guessing wire length leads to pulled terminals.

Multiplexed fronts may require a specific lamp load; document any flicker codes after install and clear only after stable operation.

Pair pricing and weight

At $98.00 each, order two for matched output when one side failed from age. Three-point-two pounds per unit means a pair still usually ships parcel; confirm multi-unit orders on the shipping policy page.

Headlamp buckets and aim drift

Plastic buckets age from UV and flexing hoods. Replace buckets that no longer hold aim screws tight; new lamps in loose buckets wander after the first pothole.

Fleet graphics and bug deflectors can block a slice of beam pattern. Walk around the truck with the lamps on before sign-off when new exterior parts were recently installed.

Winter operations

Ice on housings adds weight that stresses adjusters on motorized mounts when equipped. Clear ice before forcing motors that strip gears.

Beam pattern and load height

Tractors with lift axles or tag deployments change nose angle slightly when loaded. Re-check aim when a driver complains about new glare after the truck started hauling heavy again.

Keep spare aim screws in the shop; stripped adjusters delay release when a unit must leave before dusk.

Pair LED upgrades with bucket cleaning inside; haze on reflectors wastes light you already paid for in the lamp purchase.

Lighting PM integration

Headlamp aim belongs on the same PM sheet as marker lamps when units run night freight; aim drift is gradual until a driver files a complaint.

Five-by-seven replacements should include bucket hardware inspection; corroded adjusters strip when techs aim LEDs with extra force.

At $98.00 per lamp, buying a spare pair for a dedicated breakdown truck reduces downtime more than single-lamp stock alone.

Inspection documentation

Photograph aim settings on the wall target after adjustment; some fleets require photos for insurance files after collision repair lighting work.

Mack and Kenworth fairings change headlamp access; budget extra labor in estimates when grilles require removal for aim.

Beam cutoff

Verify low-beam cutoff after LED upgrade on loaded tractors; sagging front suspension changes aim enough that re-aim is part of the same job.

Store a printed aim target template in the lighting drawer so night-shift techs can set five-by-seven beams without hunting a blank wall section.

See the shipping policy for parcel versus freight handling. Opened or installed goods follow returns and refunds. Email support@aonetruckauto.com with VIN and stamp photos.

Sold by HEAVY TRUCK PARTS, INC. in Florida. Fitment table names are for matching parts, not OEM endorsement.