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Thermostat AR102258 for John Deere 6125A/H PowerTech Diesel

Thermostat AR102258 for John Deere 6125A/H PowerTech Diesel

SKU: NAR102258
$5302
Out of Stock
Currently unavailable
Condition: New Aftermarket
Cross-References: AR102258, NAR102258
The RF Engine Advantage
Family Operated Since 1975

Original Equipment Quality

Parts that meet or exceed OEM specifications. Guaranteed performance you can trust. Reliability built into every component.

100+ Years of Expertise

A century of collective diesel knowledge and 10+ acres of engines and engine parts, we are more than just an online reseller or call center. We know heavy-duty diesel.

Here for the Long Haul

Same location and same phone number for the last 50 years. Same commitment to getting you the right parts at the right price.

New, Reman, & Used

RF Engine offers an expansive offering of new aftermarket, remanufactured, and used engines and engine parts all under one roof.

Details

180 degree

John Deere 9220 Tractor w/ 6125A/H PowerTech engine
John Deere 9320 Tractor w/ 6125A/H PowerTech engine
John Deere 9520 Tractor w/ 6125A/H PowerTech engine
John Deere 6125HF070 Power Unit w/ 6125A/H PowerTech engine
John Deere 6105AF001 Power Unit w/ 6105A/H PowerTech engine
John Deere 9520T Tractor w/ 6125A/H PowerTech engine
John Deere 9200 Tractor Thru ESN 29999 w/ 6105A/H PowerTech engine
John Deere 744H Wheel Loader Early w/ 6105A/H PowerTech engine
John Deere 744H Wheel Loader After ESN 29999 w/ 6125A/H PowerTech engine
John Deere 6125AF001 Power Unit w/ 6125A/H PowerTech engine
John Deere 6125AFM01 Power Unit w/ 6125A/H PowerTech engine
John Deere CH2500 Sugar Cane Harvester w/ 6125A/H PowerTech engine
John Deere 744H Wheel Loader Thru ESN 29999 w/ 6125A/H PowerTech engine
John Deere 6750 Forage Harvester w/ 6125A/H PowerTech engine
John Deere 9300 Tractor w/ 6125A/H PowerTech engine
John Deere 9400T Tractor w/ 6125A/H PowerTech engine
John Deere 6125HF070 Power Unit w/ 6125A/H PowerTech engine
John Deere 7700 Forage Harvester w/ 6125A/H PowerTech engine
John Deere 9620T Tractor w/ 6125A/H PowerTech engine
John Deere 9620 Tractor w/ 6125A/H PowerTech engine
John Deere 7500 Forage Harvester w/ 6125A/H PowerTech engine
John Deere 6105HF001 Power Unit w/ 6105A/H PowerTech engine
John Deere 9300T Tractor w/ 6125A/H PowerTech engine
John Deere 824J Wheel Loader w/ 6125A/H PowerTech engine
John Deere 9420T Tractor w/ 6125A/H PowerTech engine
John Deere 9420 Tractor w/ 6125A/H PowerTech engine
John Deere 9200 Tractor After ESN 29999 w/ 6125A/H PowerTech engine
John Deere 6125AFM75 Power Unit w/ 6125A/H PowerTech engine
John Deere 7300 Forage Harvester w/ 6125A/H PowerTech engine
John Deere 9400 Tractor w/ 6125A/H PowerTech engine
John Deere 9860STS Combine w/ 6125A/H PowerTech engine
John Deere 450CLC Excavator w/ 6125A/H PowerTech engine
John Deere 9750STS Combine w/ 6125A/H PowerTech engine
John Deere 744J Wheel Loader w/ 6125A/H PowerTech engine
John Deere 7400 Forage Harvester w/ 6125A/H PowerTech engine
John Deere 6125HF001 Power Unit w/ 6125A/H PowerTech engine
John Deere 6850 Forage Harvester w/ 6125A/H PowerTech engine
John Deere 9320T Tractor w/ 6125A/H PowerTech engine
John Deere 755B Crawler Thru ESN 299999 w/ 6414T engine
John Deere 544D Wheel Loader w/ 6414T engine
John Deere 672B Grader thru ESN 299999 w/ 6414T engine
John Deere 544DH Wheel Loader w/ 6414T engine
John Deere 755BH Crawler Thru ESN 299999 w/ 6414T engine
John Deere JD544B Wheel Loader w/ 6414T engine
John Deere 640D Log Skidder thru ESN 299999 w/ 6414T engine
John Deere JD672A Grader w/ 6414T engine
John Deere 624EH Wheel Loader thru ESN 299999 w/ 6414T engine
John Deere 648D Log Skidder thru ESN 299999 w/ 6414T engine
John Deere 670B Grader thru ESN 299999 w/ 6414T engine
John Deere 690D Excavator thru ESN 299999 w/ 6414T engine
John Deere JD670A Grader w/ 6414T engine
John Deere 544C Wheel Loader w/ 6414T engine
John Deere 690DR Excavator thru ESN 299999 w/ 6414T engine
John Deere 693D Feller Buncher thru ESN 299999 w/ 6414T engine
John Deere 655 Crawler w/ 6414T engine
John Deere JD670 Grader w/ 6414T engine
John Deere 643 Feller Buncher thru ESN 299999 w/ 6414T engine
John Deere 624E Wheel Loader thru ESN 299999 w/ 6414T engine
John Deere JD750 Crawler w/ 6414T engine
John Deere 6414T Power Unit w/ 6414T engine
John Deere JD755 Crawler w/ 6414T engine
John Deere 755A Crawler w/ 6414T engine
John Deere 750B Crawler Thru ESN 299999 w/ 6414T engine
John Deere 655B Crawler Thru ESN 299999 w/ 6414T engine
John Deere JD640 Log Skidder w/ 6414T engine
John Deere 3140 Tractor w/ 6359D engine
John Deere 484 Cotton Stripper After 276 w/ 6359D engine
John Deere 3040 Tractor w/ 6359D engine
John Deere 9920 Cotton Picker w/ 6359D engine
John Deere 444D Wheel Loader After ESN 511476 w/ 6359D engine
John Deere 4420 Combine w/ 6359D engine
John Deere 4435 Combine w/ 6359D engine
John Deere 570B Grader Thru ESN 299999 w/ 6359D engine
John Deere 6359D Power Unit Saran w/ 6359D engine
John Deere 9910 Cotton Picker w/ 6359D engine
John Deere 4425 Combine w/ 6359D engine
John Deere 2955 Tractor w/ 6359D engine
John Deere 3150 Tractor w/ 6359D engine
John Deere 6359T/A Power Unit Dubuque w/ 6359T/A engine
John Deere 2950 Tractor w/ 6359D engine
John Deere 6359D Power Unit Dubuque w/ 6359D engine
John Deere 3055 Tractor w/ 6359D engine
John Deere 2940 Tractor w/ 6359D engine
John Deere 7440 Cotton Stripper w/ 6359D engine
John Deere 3255 Tractor w/ 6359T/A engine
John Deere 570B Grader Thru ESN 299999 w/ 6359T/A engine
John Deere 4050 Tractor After 6509 w/ 6359T/A engine
John Deere 544EH Wheel Loader Thru ESN 299999 w/ 6359T/A engine
John Deere 710B Backhoe Loader ESN 143930-299999 w/ 6359T/A engine
John Deere 444D Wheel Loader After ESN 511476 w/ 6359T/A engine
John Deere 4435 Hydro Combine w/ 6359T/A engine
John Deere 6359T/A Power Unit Saran w/ 6359T/A engine
John Deere 9920 Cotton Picker w/ 6359T/A engine
John Deere 3155 Tractor w/ 6359D engine
John Deere 710C Backhoe Loader Thru ESN 299999 w/ 6359T/A engine
John Deere 570B Grader After ESN 299999 w/ 6059D engine
John Deere 6059DF Power Unit Saran w/ 6059D engine
John Deere 6059DF Power Unit Dubuque w/ 6059D engine
John Deere 7445 Cotton Stripper Thru ESN 299999 w/ 6359T/A engine
John Deere 544E Wheel Loader Thru ESN 299999 w/ 6359T/A engine
John Deere 9930 Cotton Picker Thru ESN 299999 w/ 6359T/A engine
John Deere 9400 Combine Thru ESN 337245 w/ 6359T/A engine
OEM Part Number Cross Reference(s): AR102258

Warranty Information

Overview

We stand behind every part we sell — new, rebuilt, or used. While RF Engine is not the manufacturer and cannot extend additional warranties, we do guarantee that each product will arrive as described, in usable condition, and free from material defects or misrepresentation.


Warranty Coverage

  • New Parts: Covered under the original manufacturer’s warranty. All terms and coverage are set by the manufacturer. Copies available upon request.
  • Rebuilt, Reconditioned, and Used Parts: Backed by an inspection-only warranty unless otherwise stated. As with new parts, RF Engine cannot provide further warranty coverage beyond the manufacturer’s terms.
  • No Additional Warranty: RF Engine does not offer any express or implied warranties. However, if an issue arises, we are here to assist and will support you through any applicable manufacturer claim process.

Our Guarantee

All parts are guaranteed to be in the condition stated at the time of sale and free from misrepresentation. If something isn’t right, we’ll work with you to resolve it — including returns, exchanges, or refunds when appropriate.

  • We sell parts — we don’t make them — but we stand behind what we sell.
  • Guaranteed to match the description or your money back.
  • Manufacturer’s warranty applies where available; we’ll help if you ever need it.

Used Parts — What to Expect

Used parts are cleaned, inspected, and guaranteed to be usable, but please note:

  • They often have signs of wear, surface rust, blemishes, or cosmetic imperfections.
  • They may include old gaskets or residue and likely require further cleaning or machining before installation.
  • They are not refurbished, remanufactured, or restored to like-new appearance.

We recommend careful inspection and strongly encourage installation by a qualified heavy-duty diesel mechanic.

  • Worn, not worn out — used parts may show signs of age but are fit for service.
  • All used parts are tested for usability, not appearance.

Questions?

If you have questions about a part’s condition, warranty, or how we handle returns and guarantees, feel free to contact us. We’re here to help.


Last Updated: June 22, 2025

All specifications and numbers are provided for reference only and should be independently verified before use. While we guarantee our parts match their descriptions and accept returns for any discrepancies, we cannot be held liable for installation costs, modifications, or consequential damages. Questions about compatibility? Contact our parts experts at 800-828-6943, sales@dieselcranks.com, or via live chat, Mon-Fri 8am-5pm EST.