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/Probes & Sensors/730411
Back to catalog
730411 - COOLANT LEVEL SENSOR /PAI

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

PAI IndustriesProbes & SensorsIn Stock

730411

COOLANT LEVEL SENSOR /PAI

This is a coolant level sensor, also sold under the OEM number Q21-6030-004, that monitors the fluid level in the surge tank or radiator. It screws into a threaded boss and uses an internal float to detect when coolant drops too low, triggering a dash warning light. The sensor is commonly replaced when the old one fails, causing a false low-coolant alarm or failing to alert you to actual low coolant. Made by PAI Industries, it serves as a direct plug-and-play replacement for several Peterbilt and Kenworth models.

$70.83
Free Pickup Ships nationwide (3–7 days) 30-Day Returns Secure Checkout

Verified fitment

  • Peterbilt 348 (2014-2017+)
  • Peterbilt 365 (2014-2017+)
  • Peterbilt 367 (2014-2017+)
  • Peterbilt 384 (2014-2017+)
  • Peterbilt 389 (2014-2017+)
  • Peterbilt 567 (2014-2017+)
  • Peterbilt 579 (2014-2017+)
  • Kenworth T660 (2014-2017+)
  • Kenworth T680 (2014-2017+)
  • Kenworth T700 (2014-2017+)
  • Kenworth T800 (2014-2017+)
  • Kenworth T880 (2014-2017+)
  • Kenworth W900 (2014-2017+)

Verify your surge tank or radiator boss thread (1/4"-18 NPT) and the existing OE part number on the sensor flat before ordering. Other Paccar-platform chassis using the Q21-6030 surge-tank sensor may also be compatible.

Specifications

SKU730411BrandPAI IndustriesCategoryProbes & SensorsAvailabilityIn StockThread Size1/4 in - 18 NPT (male)Connector2-pin rectangular (Packard-style)Overall Length3.32 inHousing ColorWhite / Gold / SilverWarranty2-year unlimited mileage

Cross-References / Interchange

Peterbilt Q21-6030-004Peterbilt Q21-6030-001Peterbilt Q21-6024SKenworth Q21-6030-004Newstar S26688Saginaw Q21-6005Dorman 904-7632Automann AM57759506Q216030004KWP730411

Tags

KP Services Crossville
Supplier information

Part Number: 730411

COOLANT LEVEL SENSOR /PAI

Vendor: PAI Industries

Dealer: KP Services Crossville

Ask about this part

Compatibility, alternatives, and more

Related Parts

View all
730448-KNOXIn StockProbes & Sensors
PAI Industries

730448-KNOX

DPF SENSOR

$132.86
4954905CUMIn StockProbes & Sensors
MHC Kenworth

4954905CUM

OIL TEMP SENSOR

$45.72
Q43-1144-106KIn StockProbes & Sensors
MHC Kenworth

Q43-1144-106K

ENGINE OIL GAUGE KIT

$616.85
050644In StockProbes & Sensors
PAI Industries

050644

PRESSURE SENSOR 4921497

$142.05