Drive Belts & Kits
Drive Belt Automatic Tensioners
Drive Belt Idler & Tensioner Pulleys
Overrunning Alternator Pulleys
Harmonic Balancers OEM Replacement
Performance Balancers & Kits
Engine Specific Harmonic Balancers
Chevrolet 250, 292 Cubic Inch L6, Single VeeChevrolet 283, 307, 327 Cubic Inch 6-1/4"Chevrolet 283-350 Small Block V8 7"Chevrolet 283-350 Small Block 7" To Suit Big Block Crank SnoutChevrolet 283-350 Small Block V8 8"Chevrolet 350 (5.7L) Small Block LT1 1993-1997 (Crank Flange Mount) Serpentine BeltChevrolet 400 Small Block 7" Light WeightChevrolet 400 Small Block V8 8"Chevrolet 396, 402, 427 Big Block V8 8"Chevrolet 454 Big Block V8 Light Weight Neutral Balance 7"Chevrolet 454 Big Block V8 8"Chrysler 225 Slant 6Chrysler 245-265 Hemi 6 cylChrysler 318, 340 Small BlockChrysler 360 V8Chrysler 392 Big Block HemiChrysler 383, 440 Big Block V8Ford 302, 351 Cleveland V8 Counterweight HubFord 351 Cleveland V8 4 Bolt, Hub Counter Weight, XW-XY GTHO Phase I, II, IIIFord 302, 351 Cleveland V8 Neutral BalanceFord 302, 351 Cleveland V8 Counterweight Hub for Scat Cranks 12.7 ozFord 289, 302 Windsor 3 Bolt (Countersunk Pulley Location) 28oz. in.Ford 289, 302 Windsor 3 Bolt (Raised Pulley Location)Ford 302, 351 Windsor V8 3 Bolt (Raised Pulley Location) 28oz. in.Ford 302, 351 Windsor V8 3 Bolt (Countersunk Pulley Location) 28oz. in.Ford 302, 351 Windsor 4 Bolt (Raised Pulley Location) 28oz. in.Ford 302 Windsor EFI V8 4 Bolt 34oz. in. with FlywheelFord 302 Windsor 4 BoltFord Windsor Small Block 6" 3 BoltFord 302, 351 Windsor Neutral Balance 4 BoltFord 390 Big Block FE V8 Internal BalanceFord 460 Big Block Internal BalanceFord Y-Block V8 1955-62 "Single Vee"Pontiac GTO 5.7L LS1, 6.0L LS2 V8 Serpentine BeltPontiac 287-455 Cubic Inch V8
CVT Scooter Belts
ATV Outdoor Activity Belts
Industrial V-Belt
Timing Belt & Kits
Timing Chain Kits
Timing Belt - Hydraulic Automatic Tensioners (HAT)
Water Pumps
Automotive Caps
Thermostats, Gaskets & Outlets
Heater Tap Control Valves
Radiator Coolant Tanks
Fan Clutches
Hose Air
Hose Air Intake
Hose Fuel
Hose Heater/Blanking Caps
Hose Radiator
Hose Service
Hose Turbo
Hose Clamps

Thermostats Heavy Duty

Dayco offers competitively priced, innovative and well-designed thermostats to fit the needs of today's Heavy Duty diesel engines.

Click on a column heading to sort the items in the list

Part numberTemperatureFlange to baseFlange diameterHeightVent valve
DT208A82°C82mm97mm 46mm
DT217M80°C43mm92mm 55mm
DT218C71°C26mm67mm 43mm
DT219A82°C0mm0mm 0mm
DT227A82°C32mm68mm 43mm
DT228A82°C0mm81mm 0mm
DT229C71°C0mm81mm 0mm
DT230D88°C0mm81mm 0mm
DT231A82°C 73mm  
DT232C71°C0mm72.5mm .mm
DT233E77°C0mm72.8mm 0mm
DT234D88°C0mm72.8mm 0mm
DT235A82°C34mm43.4mm 28.8mm
DT236A82°C0mm72.8mm 41mm
DT237D88°C0mm73.6mm 0mm
DT242A82°C0mm110mm 0mm
DT252A82°C43mm82mm 27.2mm
DT253H85°C25.5mm53.8mm 0mm
DT254A82°C32.3mm53.8mm 28.29mm
DT271A82°C33.8mm53.8mm 28mm
DT272A82°C32mm53.8mm 28mm