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Timing Belts

HNBR and rubber timing belts for belt-driven gasoline and diesel engines in pickups, SUVs and vans, specified by tooth count, width, tooth profile and engine code.

Products

39 products

About timing belts

A timing belt synchronizes the crankshaft with the camshaft and, on many diesel engines, the injection pump or balance shafts. On interference engines, a belt failure lets pistons and valves collide, so timing belts are replaced at fixed intervals whether or not they show wear.

Construction

  • Tensile cords – typically fiberglass, sometimes aramid, which provide dimensional stability.
  • Body compound – chloroprene (CR) on older designs, and HNBR (hydrogenated nitrile) on most modern engines for heat and oil resistance.
  • Tooth facing – nylon fabric that resists tooth wear.
  • Tooth profile – trapezoidal on older engines, curvilinear (round or modified round) profiles on most modern designs. Profiles are not interchangeable.

Belts carry printed direction arrows and sometimes timing marks that align with sprocket marks. Workshops rely on these, so print clarity is a practical quality point.

Applications

Belt-driven engines remain common in export markets, including Toyota's 1KD and 2KD common-rail diesels, Mitsubishi's 4D56 diesel with its separate balance shaft belt, and many gasoline engines. Newer engines increasingly use chains or gears, covered in timing components.

Why belts fail early

Oil or coolant leaks contaminating the belt, seized idlers or tensioners, dust ingress, extreme heat, incorrect tension at installation and belts that have aged in storage. Replacing the belt without the tensioner and idlers is a common false economy; timing belt kits address that. See the Toyota Hilux page for platform context.

Buying & specification guide

  • OEM number and engine code; the same model can use different belts for gasoline and diesel engines or across engine updates.
  • Belt data: tooth count, width and tooth profile. Check the reference against the OEM, since visual similarity is misleading.
  • Balance shaft belts: order separately where the engine uses a second belt.
  • Compound: HNBR is expected on modern engines; confirm material on offers.
  • Kits vs belts: stock both, but encourage kits for engines with known tensioner or idler wear issues.
  • Storage: belts should be stored flat or loosely coiled in a cool, dry place away from sunlight, ozone sources such as electric motors, and chemicals. Avoid kinking; bending a belt sharply can break the tensile cords.
  • Packaging: individual sleeves or boxes with printed reference and engine application; master cartons should prevent crushing.
  • Stock age: rotate stock and record manufacturing dates, since rubber compounds age even when unused.

Export supply

Timing Belts can be quoted on FOB, CFR, CIF, FCA or EXW terms and combined with other product groups in a single consolidated container. Send part numbers, quantities and destination port for a validated quotation.

Export processMixed container ordersShipping & logistics

Frequently asked questions

How can I tell whether an engine uses a timing belt or chain?

Check the OEM parts catalogue or service manual for the engine code. Belt-driven engines have a timing belt part number and usually a plastic timing cover; chain and gear engines do not have a scheduled belt replacement.

Can a timing belt with the same tooth count but a different profile be used?

No. Tooth profiles must match the sprockets. A mismatched profile will wear rapidly or jump teeth, risking engine damage.

Should the water pump be replaced with the timing belt?

On engines where the timing belt drives the water pump, many workshops replace it at the same time to avoid repeat labor. Kits with water pumps are available for some engines.