--- product_id: 9435395 title: "Dorman 600-101 4WD Actuator Compatible with Select Models" price: "£89.49" currency: GBP in_stock: true reviews_count: 13 url: https://www.desertcart.co.uk/products/9435395-dorman-600-101-4wd-actuator-compatible-with-select-models store_origin: GB region: United Kingdom --- # Restores 4WD functionality Direct OE replacement US-engineered quality Dorman 600-101 4WD Actuator Compatible with Select Models **Price:** £89.49 **Availability:** ✅ In Stock ## Summary > ⚙️ Restore your 4WD power and never get stuck again! ## Quick Answers - **What is this?** Dorman 600-101 4WD Actuator Compatible with Select Models - **How much does it cost?** £89.49 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/9435395-dorman-600-101-4wd-actuator-compatible-with-select-models) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **4WD Revival:** Effectively fixes inoperative four-wheel drive systems, getting you back on the trail. - • **Seamless OE Fit:** Direct replacement engineered to match original specs for hassle-free installation. - • **Precision Verified:** Use the garage tool to confirm exact vehicle compatibility before purchase. - • **Customizable Finish:** Exterior ready to paint, so you can maintain your vehicle’s aesthetic. - • **Century-Strong Reliability:** Backed by over 100 years of Dorman’s trusted automotive expertise. ## Overview The Dorman 600-101 4WD Actuator is a direct OE replacement part designed to restore four-wheel drive functionality on select vehicle models. Weighing just 9.6 ounces and measuring 3.3 x 3.3 x 7.6 inches, it’s engineered and backed by over a century of Dorman’s automotive expertise in the USA. Easy to verify fitment with the garage tool and customizable with a paint-ready exterior, this actuator ensures reliable performance and seamless integration. ## Description This 4WD actuator directly replaces the original equipment part on specific vehicle applications. It is reverse engineered to reliably restore proper functionality. Review: Better than the OEM replacement part - I have a 1995 Chevy K2500... The thermal actuator went out causing the 4x4 fuse to also blow as a result. After searching through a number of different forums, I found out about the Dorman replacement available here at desertcart. When I ordered the unit, I also purchased the associated wiring harness which is a must have as it also includes a metal spacer that you need to insert into the axle prior to adding the replacement actuator. Removal of the old unit was straight forward, as was installation of the new Dorman unit. The wiring harness plugs right in and there is a single lead that needs to be spliced into a wiring harness running to transfer case. Detailed instructions are provided however when it came to finding the wire/connector that the instructions mention, (4-wire connector C120) it got a little confusing for me as I couldn't locate it on my truck. I went back through the reviews here and found one where the person mentioned that they spliced it into a brown wire that came from the transfer case. I was able to find that wire and spliced into it without any issues, and it provided the power required for the new replacement actuator. The new unit works great, 4x4 is now instantaneous, instead of there being a lag time. Also, it doesn't appear to be effected by temperature at all. And, perhaps the best thing of all, the actuator and the harness cost less then the OEM replacement unit. Win/Win :) Update: 01/10/2023 So, almost 10 years to the day this was installed it has failed. Given where we live this isn't a huge surprise, Winter environment where once in 4wd it isn't shifted in or out frequently. I've come to learn through this and other vehicles we own, if you are not activating actuators on a regular basis they just stop working. The fact that this went 10 years (even though the relative miles traveled in that time frame were low) is saying something. I still give it a 5 star review and have reordered. Review: Works great for 2007 Silverado - Works great on my 2007 Silverado. 4wd works again. ## Features - Direct replacement - this 4WD axle actuator directly replaces the original equipment part on specific vehicle years, makes and models - Effective fix - installation addresses inoperative four-wheel drive caused by failed original actuator - Century of experience - for over 100 years, Dorman Products has provided quality automotive replacement parts to its customers - Trustworthy quality - backed by team of designers and engineers in the United States - Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle. ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Dorman Products | | Brand | Dorman | | Model | 600-101 | | Item Weight | 9.6 ounces | | Product Dimensions | 3.3 x 3.3 x 7.6 inches | | Item model number | 600-101 | | Is Discontinued By Manufacturer | No | | Exterior | Ready To Paint If Needed | | Manufacturer Part Number | 600-101 | | OEM Part Number | 742D421A; 7F2000; 7F2001; 83-115A; A482421; FWD14; FWD32; TCA-19; TCA-20; TCA-22; 26060073; 8-26060-073-0 | | Position | Center | ## Images ![Dorman 600-101 4WD Actuator Compatible with Select Models - Image 1](https://m.media-amazon.com/images/I/71x+nkHFAJL.jpg) ## Questions & Answers **Q: 92 k2500 5.7 4x4 wants to know if this will fit? Amazon filter says no but switch and harness fit? hum..?** A: This is an upgrade unit for the old style thermal actuator. This should work on your truck, but you have to use the Dorman 600-600 upgrade harness, which includes a spacer which goes into the axle for proper operation. I installed this actuator and the upgrade harness kit on my 93 Silverado K1500 5.7 in about one and a half hours. The hardest part was routing the extra hot wire from the new harness back up to the 4X4 shifter. I spliced into the hot wire going to the shifter so the actuator stays engaged with the ignition switch off. If you run the new hot wire on upgrade harness directly to the battery the actuator will disengage/engage every time you turn the ignition off/on while in 4 wheel drive. My front axle now engages as soon as I move the shifter, no waiting like the old thermal unit and cold weather does not affect it. **Q: Have a 05 gmc 1500 slt. 2wd dont work. will this fix the problem? or will it fit?** A: This will fit this truck. **Q: My 92 k1500 has the shifter in the floor for 4x4 and when i put it in4 low or high the front drive shaft on the column doesnt light up would this fix?** A: Did you get it fixed? I would suspect either the lamp burned out like in my 94 Suburban with the NP243. My NP243 also has 2 switches, one for the actuator, the other for the "4x4" light (which I believe is a "194" bulb) under the little diagram on the cover when I engage the floor lever. Also check ACDelco "PT724" (GM Original Equipment 2-Way Male Gray Multi-Purpose Pigtail) if your plug is bad. **Q: My 96 k1500 takes awhile to ingage. Would this fix it** A: It will fix it but along with that you need a wiring harness to change over from Chevrolet you have to get it from Chevrolet ## Customer Reviews ### ⭐⭐⭐⭐⭐ Better than the OEM replacement part *by J***K on January 14, 2013* I have a 1995 Chevy K2500... The thermal actuator went out causing the 4x4 fuse to also blow as a result. After searching through a number of different forums, I found out about the Dorman replacement available here at Amazon. When I ordered the unit, I also purchased the associated wiring harness which is a must have as it also includes a metal spacer that you need to insert into the axle prior to adding the replacement actuator. Removal of the old unit was straight forward, as was installation of the new Dorman unit. The wiring harness plugs right in and there is a single lead that needs to be spliced into a wiring harness running to transfer case. Detailed instructions are provided however when it came to finding the wire/connector that the instructions mention, (4-wire connector C120) it got a little confusing for me as I couldn't locate it on my truck. I went back through the reviews here and found one where the person mentioned that they spliced it into a brown wire that came from the transfer case. I was able to find that wire and spliced into it without any issues, and it provided the power required for the new replacement actuator. The new unit works great, 4x4 is now instantaneous, instead of there being a lag time. Also, it doesn't appear to be effected by temperature at all. And, perhaps the best thing of all, the actuator and the harness cost less then the OEM replacement unit. Win/Win :) Update: 01/10/2023 So, almost 10 years to the day this was installed it has failed. Given where we live this isn't a huge surprise, Winter environment where once in 4wd it isn't shifted in or out frequently. I've come to learn through this and other vehicles we own, if you are not activating actuators on a regular basis they just stop working. The fact that this went 10 years (even though the relative miles traveled in that time frame were low) is saying something. I still give it a 5 star review and have reordered. ### ⭐⭐⭐⭐⭐ Works great for 2007 Silverado *by R***S on August 19, 2025* Works great on my 2007 Silverado. 4wd works again. ### ⭐⭐⭐⭐⭐ what i needed *by T***B on March 20, 2026* good deal work well ## Frequently Bought Together - Dorman 600-101 4WD Actuator Compatible with Select Models - Dorman 600-600 4WD Actuator Wiring Harness Compatible with Select Chevrolet / GMC Models - Dorman 600-502 Transfer Case Switch Compatible with Select Cadillac / Chevrolet / GMC Models --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/9435395-dorman-600-101-4wd-actuator-compatible-with-select-models](https://www.desertcart.co.uk/products/9435395-dorman-600-101-4wd-actuator-compatible-with-select-models) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-21*