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FAQs

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.

Output: a sender varies its signal continuously for a gauge to read; a switch simply closes at a threshold to light a lamp. They share threads and look alike, and the wrong one gives a lamp that never lights or a gauge pinned at one end. The instrument it feeds — gauge or lamp — names which to order.

Only one calibrated to it: gauges are built to a sender's resistance range, and a mismatched pair reads confidently wrong — the classic half-scale lie. Match the old sender's part or quote the gauge's make and the machine via Ask Simon; thread and reach then confirm the physical fit.

Split it in minutes: disconnect the sender and watch the gauge's rest behaviour, substitute a known resistance for the sender, and check the sender's earth — senders read against their boss, and a corroded thread or earth strap turns truth into fiction more often than sensors die. The order is earth, sender, wire, gauge.

From the old unit and its instrument: function, thread size and reach, connector pattern, voltage, and — for senders — the gauge it must agree with. The markings plus a photograph of the sensor and connector via Ask Simon or WhatsApp close the match; sealing washers renew with the sensor as a matter of course.

Returns are accepted within 30 days of purchase, in original packaging, on orders delivered within the United Kingdom. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will typically arrange collection and replacement at no cost to you. For parts that don't fit your machine, the Fit Guarantee covers a hassle-free return at no cost. For buyer's remorse — you've changed your mind or ordered the wrong item, email us first to obtain a Return Merchandise Number; a restocking fee may apply. Refunds are issued to the original payment method once the return is inspected.

Sensor

Sensors are the machine's nervous system: the senders and switches that turn temperature, pressure, level and speed into gauge readings, warnings and ECU decisions, and the components blamed first whenever a gauge misbehaves. PartsForMachines supplies sensors by function, fitment and signal, within the electrical family. The families follow what's measured: temperature senders and switches for coolant and oil, the gauge-sender and warning-switch distinction mattering at matching, pressure senders and the oil-pressure switches that light the red lamp, level senders for fuel and fluids, and the speed and proximity sensors of modern control, each specified by thread and fitment, voltage, and the signal or switching behaviour the instrument expects, listed per product. Matching runs from the old sensor's markings, thread and connector, with the gauge-compatibility question, what resistance range or signal the instrument was built to read, the one that decides whether the needle tells the truth. The diagnosis honesty is instrumentation's: a wild gauge is sensor, wiring or gauge, and the substitution and resistance checks split them in minutes, an earth-quality fault mimics sensor death constantly on machinery, since senders read against earth and a corroded boss reads as fiction, and a warning light's sender is cheap to test before an engine's health is doubted. Relays, solenoids and the electrical family sit alongside. For matching from markings and the instrument's details, contact the team via WhatsApp 07754288583.