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381851 | Caterpillar 3406A/B/C/E Regulator, New

Pricing: $31.19

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When it comes to Regulators, why risk your engine?

Don't let a small part turn into a major repair. We wouldn't risk putting sub-par parts into our engines, so why should you?

HHP only sells Regulators that are manufactured in a state of the art facility using top of the line machining and measuring equipment to ensure each part is manufactured to OEM specifications. Combine this with up to 50% off OEM prices, an industry leading 2-Year Parts and Labor Warranty and technical expertise from HHP’s certified staff, and you’ve got a quality Regulator that will keep you running for another million miles.

Need a little extra proof? Let's talk shop.

  • This Regulator is built to strict OEM specifications ensuring proper fitment and function. You'll also save up to 50% off OEM prices by shopping with HHP!
  • Worried about quality? You'll receive equal or better quality compared to the OE at a much lower price. That's a win-win situation.
  • Additionally, this regulator is manufactured and assembled in an ISO 9001:2008 certified facility giving you quality and consistency you can trust.
  • Built with hard-wearing materials for long-lasting strength and durability.
  • We have ASE certified techs on staff to answer all of your technical questions. You'll be back up and running in no time.


  • (1) Regulator 


2 Year Parts and Labor Warranty
OEM Applications:
  • 1223821
  • 2477133
  • 381851
  • 4W4842
  • 7C3095

Technical Data

Engine Specifications:
Start to open @ 189 f = 87.2c
Fully open @ 208 f= 97.7c

Fits Applications:


Shipping Information

  • Item Requires Shipping
  • 0.5 lbs.
  • W3.0000” x H3.2500” x L3.0000”

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