New 9S3808 (4H1991) Regulator Temp Replacement suitable for Caterpillar Equipment

$57.00
In Stock • Ships Today • Order By 3pm ET
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Details

Description for 9S3808 Water Temperature Regulator

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This aftermarket Caterpillar 9S3808 Water Temperature Regulator is built to meet U.S. OEM specifications for durability and performance. At Propel Parts, we perform strict quality checks to ensure it fits and functions like your original Caterpillar Water Temperature Regulator.
Direct Replacement: Engineered for a precise fit in Caterpillar equipment.
OEM-Spec Quality: Manufactured to match the performance of your original part.
Tested Reliability: Strict quality checks are performed before shipping.

Specification for 9S3808 Water Temperature Regulator

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Replacement Part Number(s): 9S-3808, 4H1991
Specifications: Aftermarket Part | US OEM Specs.
Shipping: Same Day (Weekdays) | Order by 3pm.
Warranty: Unlimited Mileage | 1 Year Warranty.
Core: No Core Required | No Core Charge.
Weight: 0.90 LBS | 0.41 KG
Dimensions: 2.76 x 2.76 x 3.54 (inches)
Condition: New

Exact Fit Guarantee for 9S3808 Water Temperature Regulator

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Looking for a reliable replacement Caterpillar 9S3808 Water Temperature Regulator ? Order with confidence through our Exact Fit Guarantee.
Verified Fit: Before we ship, we check your part against CAT SIS (Caterpillar Service Information System) to confirm it's the correct match for your machine.
Peace of Mind: If it isn't the right fit, we'll contact you with the correct Caterpillar part number before your order goes out.
Exclusive Guarantee: Enroll in our Exact Fit Guarantee at checkout to ensure you get the part you need the first time.
Reviews

Customer Reviews

★★★★★

Having issue running my credit card, Steven was more than helpful to send me a payment link to complete my transaction!

★★★★★

Received 15 items within 5 days from placing order !
Great. !

★★★★★

Good Stuff.
We have had a couple shipping issues, but each time they made it right and we ended up getting what we need. Quality parts at half the price of OEM.

★★★★★

I almost want to cry ;( writing this review because I dont want people to find out about them and rather keep them in my pocket but they deserve it…
This company is great with Quality Products at amazing prices! Sometimes, their website is not the most accurate but is user friendly and if you got questions they will call back and are very prompt in responding via a call or text to verify inventory before placing an order.
I really appreciate and look forward to continuing to work with you all especially Anthony — he is amazing & the best!!!

★★★★★

My part was damaged in shipping and everyone was very helpful on get it resolved and sent me another free of charge.

★★★★★

Always helpful and great pricing

★★★★★

Had a great experience with ordering correct engine gaskets for our 3208 caterpillar engine

★★★★★

Stevens the man. Placed my order and sent him the order # and had me in the loop within an hour.

★★★★★

Been buying from them for years and have almost never had an issue. The few times I had a question or something to handle, they have shown amazing customer service. Great product and a great company.

★★★★★

Tiene una buena atención y servicio

Product Questions

Frequently Asked Questions

What is the 9S3808 component used for?

The 9S3808 component plays a specific role in its assembly on Caterpillar equipment, contributing to safe, dependable performance.

How do I install the 9S3808 component?

To install the 9S3808 properly, prepare the area first and confirm the result afterward. Use these steps:

  1. Shut the machine down and isolate power before working on the assembly
  2. Clean the mating surfaces and inspect them for wear or damage
  3. Remove the old part and check the area for debris
  4. Fit the new 9S3808 in the correct orientation per your service manual
  5. Reassemble to specification and confirm correct operation before returning to service

Which Caterpillar machines is the 9S3808 compatible with?

Fitment for the 9S3808 depends on your specific Caterpillar model and the assembly it serves, so confirm the application before you order. Or reach out to Propel Parts for help verifying fitment.

Does the 9S3808 component meet performance standards?

Yes. The 9S3808 is manufactured to meet OEM specifications for tolerance and material quality. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications for dependable, long-term performance.

How often should the 9S3808 be replaced?

Plan to replace the 9S3808 during a rebuild of the surrounding components, or sooner if inspection shows it is past its serviceable limit.

What are the signs of a worn or failing 9S3808 component?

A worn 9S3808 usually gives early warning through the assembly it supports. Watch for these signs:

  • Visible wear, cracking, or corrosion on inspection
  • Reduced performance or reliability in the assembly
  • Unusual noise, movement, or leaks near the part
  • Premature wear on the components around it

Why is the 9S3808 important, and what related parts work with it?

A sound 9S3808 is inexpensive insurance against larger repairs. Servicing it on time with parts that meet OEM specifications keeps the whole assembly working as intended. Related hardware on our site includes 3879503 Seal Valve and 1433125 Oil Cooler Lines Gasket Kit.

Questions About this Part?
Have a question about fit, compatibility, shipping, warranty, or returns?
Compatible Models

This 9S3808 Water Temperature Regulator is compatible with the following models:
44H, D4D & more...

Shipping | Returns

Shipping

We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.

We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.

Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.

Easy Returns

Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.

Warranty

Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.

Exact Fit Guarantee

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