Skip to content
English (865) 486-4003|Spanish (865) 486-4001
(865) 486-4003
partsnow.ai + TalkRev
CatalogTrucksGuides
|Brakes & Wheel EndAir SystemElectrical & LightingEngineFiltrationTrailer PartsAll Parts →

Cart

partsnow.ai + TalkRev

AI-powered truck and trailer agentic commerce platform. 50,000+ parts from trusted dealers.

English (865) 486-4003 Spanish (865) 486-4001 support@partsnow.ai1901 Sutherland Avenue
Knoxville, TN 37921

Categories

  • Brakes & Wheel End
  • Air System
  • Electrical & Lighting
  • Engine
  • Filtration
  • Suspension & Steering
  • Trailer Parts
  • Drivetrain

Resources

  • Catalog
  • VIN Lookup
  • Buying Guides
  • Visual Part ID
  • About
  • Contact

Policies

  • Shipping Policy
  • Return Policy
  • Terms of Service
  • Privacy Policy
© 2026 partsnow.ai. All rights reserved.partsnow.ai is operated by Post Equipment, Inc.
VISAMCAMEXDISCOVER
|Secured by Stripe
Home/parts/Cooling System/5292742
Back to catalog
5292742 - THERMOSTAT

Image is for illustration purposes only. Actual part may vary.

CumminsCooling SystemIn Stock

5292742

THERMOSTAT

This is a genuine Cummins 180°F coolant thermostat designed for 1998.5–2007 Dodge Ram trucks with the 5.9L Cummins turbodiesel and for equipment powered by the 3.9L 4BT Cummins engine. It opens at 180°F to regulate coolant flow, keeping the engine at its proper operating temperature. A faulty thermostat can cause overheating, poor heater output, or excessive fuel consumption, so replace it if the engine runs too hot or too cold, or if temperature fluctuations are noticed. The thermostat is a direct-fit replacement for the original part and comes with a jiggle pin and vented design to aid in air bleed during installation.

$113.87
Free Pickup Ships nationwide (3–7 days) 30-Day Returns Secure Checkout

Verified fitment

  • 1998.5–2007 Dodge Ram 2500/3500 (5.9L Cummins)
  • Equipment with 3.9L 4BT Cummins engine

Replaces old Cummins part number 3967195. Confirm engine year; 1998 models built after mid-1998 (1998.5) use this thermostat.

Specifications

SKU5292742BrandCumminsSupplierKnox TrailersCategoryCooling SystemAvailabilityIn StockOpening Temperature180°FFully Open Temperature203°FTypeJiggle pinVentedYesBypass Housing RequiredNoHousing Bore Diameter61.4 mm

Cross-References / Interchange

3967195
Supplier information

Part Number: 5292742

THERMOSTAT

Dealer: Knox Trailers

Ask about this part

Compatibility, alternatives, and more

Related Parts

View all
FB905200-32In StockCooling System
KP Services Crossville

FB905200-32

FAN BLADE

$308.89
MAC06PTRIn StockCooling System
ROPPEL

MAC06PTR

RADIATOR

$701.40
IDLER PULLEYIn StockCooling System
Cumberland Auto Parts

2330133

IDLER PULLEY

$78.06
72-2029084In StockCooling System
Cumberland Auto Parts

72-2029084

IDLER PULLEY

$78.06