Engine Spares
Belt & tensioner
V-ribbed and fan belts, tensioners and tensioner shock absorbers. Measure the old belt or send its number and we'll match it.
What to send us
The number stamped on the old part is the quickest route. If it has worn off, the engine or genset model and serial number usually gets us there. Photos help more than descriptions.
We cross-check whatever you send against the OEM catalogue and confirm the match with you before anything ships.
About this range
An automatic tensioner keeps a fixed load on the drive belt through a spring and a damper, so the belt stays tight as it wears and as the engine warms. When the spring weakens or the pulley bearing dries out, belt tension falls away.
You hear it before you see it. A squeal on start-up, a belt that glazes or frays along one edge, a tensioner arm that flutters at idle instead of sitting still, or a pulley that feels rough when you turn it by hand with the belt off. A belt that keeps going in service is usually telling you about the tensioner rather than the belt.
Belts are matched by length, width and rib count, so either send the number printed on the belt or measure the old one. Tensioner shock absorbers are a separate item on the larger engines and we list those too.
Products in this category
10 listed
Open one for its specification and the part numbers it covers. We stock more than we list, so send us the number even if yours isn’t here. You can also look a number up in the part number index.
Cummins V-ribbed belt
- 3098367
- 3289224
- 3288497
Cummins Big Cam engine belt 4911762
- 4911762
Cummins KTA19G fan belt 178517
- 178517
Cummins QSB6.7 fan belt 3979344
- 3979344
Cummins belt tensioner 3095684
- 3095684
Cummins QSB / QSL belt tensioner 3970822
- 3970822
- 3974102
- 3976831
- +4 more
Cummins QSM11 belt tensioner
View part
Cummins belt tensioner 3976834
- 3976834
Cummins belt tensioner shock absorber 3008018
- 3008018
Cummins QSK60 fan belt 3176460
- 3176460
More in engine spares
6 of 17
Cummins engine spares
27The parts that go inside or bolt onto the engine itself. Send the engine model along with the number stamped on the part you're replacing.
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Cummins fuel injector
20Injectors for Cummins diesel engines. Injector numbers are superseded fairly often, so we cross-check the number on the old unit before quoting rather than going by engine model alone.
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Fuel pump
45Fuel pumps and pump assemblies for diesel engines and gensets. Send the pump's own number as well as the engine model, since one engine can take more than one pump variant.
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Water pump
19Coolant pumps for diesel engines. A failing pump usually shows up as coolant loss or overheating. Send the number cast into the old pump housing and we'll match it.
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Piston, liner & ring kit
12Pistons, liners, ring sets, cylinder heads and the LPR kits that bundle them. Tell us the engine model and bore size, and whether you need standard or oversize.
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Engine gasket set
7Top sets, full sets, tappet cover gaskets and valve seat inserts. Say which job you're doing and we'll list what goes with it.
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