Partsology
Master Engine Rebuild Kit for 2001-2009 Ford Explorer, Mazda B4000, Mercury Mountaineer
Master Engine Rebuild Kit for 2001-2009 Ford Explorer, Mazda B4000, Mercury Mountaineer
Couldn't load pickup availability
DNJ Master Engine Rebuild Kit
Includes: Piston Set, Piston Ring Set, Intermediate Bearing Set, Main Bearings Set, Rod Bearings Set, Full Gasket Set, Freeze Plug Set (Brass), Timing Chain Kit, Oil Pump.
Engine Details: w/ Oil Pump & Timing Belt Or Timing Kit If Applicable, Master Kit, w/ Gears, From 7/24/00.
Brief Fitment Information: [2001-2009] / Ford, Mazda, Mercury / B4000, Explorer, Explorer Sport, Explorer Sport Trac, Mountaineer, Ranger / Liters: 4.0 / V6 / Valves: 12 / VIN: K.
Part Warranty: 12-month or 12,000-mile warranty, whichever comes first. Warranty must be requested by the original purchaser and is limited to the replacement of the alleged defective part(s) only.
2001-2009 Ford Explorer, Mazda B4000, Mercury Mountaineer Engine Rebuild Kit
Partsology offers the EK436M 4.0L V6 engine rebuild kit, designed specifically for 2001-2009 Ford Explorer, Ford Ranger, Mazda B4000, and Mercury Mountaineer models. This OEM-quality rebuild kit provides everything needed to restore your engine to peak performance, ensuring long-lasting reliability and smooth operation. Whether you’re tackling everyday commuting, towing, or off-road adventures, these vehicles are built for versatility and capability, and the EK436M engine rebuild kit helps keep your 4.0L V6 running like new. The kit includes high-quality pistons, rings, bearings, gaskets, and seals, carefully engineered to match factory specifications, so you can confidently rebuild your engine with parts you can trust.
Over time, engines can experience wear from high mileage, overheating, or poor maintenance, leading to reduced power, oil leaks, or knocking sounds, which are signs that an engine rebuild may be necessary. Using a rebuild kit like the EK436M can significantly extend the life of your engine, restore lost performance, improve fuel efficiency, and prevent costly repairs down the line. Partsology makes it easy to get these essential components at amazing prices with next-day shipping, helping you get your 4.0L V6 back on the road quickly. Rebuilding your engine ensures your vehicle remains reliable, efficient, and ready to handle everything from daily driving to rugged adventures.
Shipping & Returns
Shipping & Returns
Shipping on most orders in 24-48 hours special orders can be 2-3 days. Returns see Returns Policy.
We have a 30-day return policy on most products, which means you have 30 days after receiving your item to request a return. Some products carry a longer manufacture warranty please contact us if you have questions about items.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at overthehilltractor@gmail.com. Please note that returns will need to be sent to the following address: 2005 Stuarts Draft Hwy, Stuarts Draft, VA 24477
If your return is accepted at damage or defective, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
If your return is due to no longer needed, wrong size order, ordered by mistake, found better pricing, etc the customer is responsible for the return shipping cost.
Any item returned over $50 cost we suggest insurance on package.
You can always contact us for any return question at overthehilltractor@gmail.com.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, we can only give 72 hours from time package is scanned delivered to accept claims. Please contact within 72 hours of delivery so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, like fuel related items due to hazardous materials shipping regulations. We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Electrical parts can only be returned if new and in original condition, Used electrical parts are not returnable unless actually defective, contact us with details.
Unfortunately, we cannot accept returns on sale items or gift cards.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at overthehilltractor@gmail.com.
Most items are covered by 30 day warranty, Fuel Related parts are only covered against actually manufacture defect since the fuel produced today breaks down gaskets and seals quickly. Electrical parts can only be returned if new and in original condition, Used electrical parts are not returnable unless actually defective, contact us with details. Returns are handled on each individual item, some items will not require return for refund just that customer submit picture of proof of issue. Please contact us with questions about returns.

-
Free Shipping
Free shipping on orders over $150
-
