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FAQs

Two matches: (1) bulb fitting code — stamped on the bulb base (e.g., H4, BA15S, P21W) or listed in the equipment parts manual; (2) operating voltage — 12V or 24V, must match the equipment electrical system. The wattage rating must match or be specified-LED-equivalent (some equipment with electronic bulb-monitoring flags a wrong-wattage bulb as faulty). The fitting code, voltage, and wattage are listed on every product page.

LED replacements offer significant advantages on most fitments: 5-10× longer service life, 60-80% lower current draw, brighter output for the same fitment, and faster switch-on (relevant for indicators and brake lights). Considerations: (1) some modern equipment with CAN-bus electronic bulb-monitoring rejects LEDs without specific CAN-compatible drivers — check before fitting; (2) some headlamp reflector designs are optimised for halogen filament position and don't focus LED output correctly — check the headlamp design; (3) LEDs run cooler, which can fail to keep snow and ice off light lenses in winter.

Modern commercial vehicles and some plant equipment have electronic bulb-monitoring on the CAN-bus electrical system — the controller detects a working bulb by its expected current draw. LED bulbs draw far less current than halogen equivalents, so the controller may interpret an LED as a 'bulb out' fault and flag a warning. CAN-bus compatible LED bulbs include built-in load resistors that mimic the halogen current draw — check the LED's specification, or fit an external load resistor in parallel with the LED.

Yes. Replacement bulb-holders (matched by fitment type — BA15S, T10, H4 specific holders), replacement bulb-circuit connectors (vehicle-side wiring connectors), and harness adapters (where the new bulb's connector pattern differs from the original) are available across the bulb range. Bulb-holder corrosion is a common service item on outdoor and exposed lighting fitments. Search by the equipment make and model, or WhatsApp 07754288583 with the holder type and a photograph for cross-reference.

Every product is backed by our Fit Guarantee. If a part is incompatible with your machine, you can return it hassle-free. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will arrange collection. For other returns, email us first to obtain a Return Merchandise Number before sending. Returns are accepted within 30 days of purchase, in original packaging, on UK orders. A restocking fee may apply on returns where the buyer has changed their mind. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and "Check where we deliver" confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

Bulbs

Within Plant & Agriculture, Bulbs covers the replacement bulbs used across plant equipment, agricultural tractors, telehandlers, commercial vehicles, and the wider off-highway aftermarket — covering halogen and LED headlamp bulbs, indicator and brake-light bulbs, work-light and beacon bulbs, dashboard and panel-illumination bulbs, and the matching bulb-holders and connector hardware used in lighting circuit service and replacement. Parts for Machines supplies replacement bulbs across the plant, agricultural, and commercial-vehicle ranges, with both halogen and LED variants for most fitments. LED replacements for traditional halogen bulbs are increasingly the workshop standard — longer life, lower current draw, and brighter output for the same fitment. We are an authorised distributor and seller of Sealey across the bulb range. Sealey covers the broadest line of plant, agricultural, and commercial-vehicle replacement bulbs in standard and LED variants, with the matching bulb-holder, connector, and harness-adapter hardware. Product pages list the bulb fitting type (H1, H4, H7, H11, BA15S, BA15D, P21W, W5W, T10, etc. — must match the original fitment), the operating voltage (typical 12V or 24V — must match the equipment electrical system; some 12V bulbs work on 24V with a series resistor but most don't), the wattage rating (matched to the original fitment to avoid overloading the lighting circuit and CAN-bus error codes on some equipment), the bulb technology (halogen, LED, xenon HID), and the colour temperature (in Kelvin — typical 3,000K warm white for halogen; 4,000-6,000K cooler-white for LED; specific colours for indicators and warning lights). For replacement of an existing bulb, the OEM fitting code is the fastest match (stamped on the bulb base or the equipment's parts manual). LED replacements for halogen fitments must be CAN-bus compatible on equipment with electronic bulb-monitoring (some modern commercial vehicles flag a low-current LED as a "bulb out" fault). Trade pricing on bulk and fleet orders is available; contact the team via WhatsApp 07754288583.

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How do I match a replacement bulb to my equipment?

Should I replace halogen bulbs with LED equivalents?

What's a CAN-bus error code and why does it matter for LED bulbs?

Are bulb-holders, connectors, and harness adapters available?

What if the part doesn't fit or arrives damaged?

How quickly will I get my order and where do you deliver?

Bulbs

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