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Remanufactured M5R4 / M5OD-R4 Transmissions

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Ship Direct To Repair Shop
We provide an out-the-door price, with shipping, for a replacement remanufactured M5R4 / M5OD-R4 transmission direct to the repair shop.

M5R4 / M5OD-R4 Transmissions At Wholesale Prices
At Street Smart, we provide remanufactured transmissions shipped factory direct at wholesale prices to save you money.

Our Remanufactured M5R4 / M5OD-R4 Transmission Upgrades & Upgrades

Put simply, a remanufactured transmission is a used transmission that has been returned to a like-new condition. Each remanufactured M5R4 / M5OD-R4 is built in our state of the art factory by skilled Certified technicians. They test everything from metal thickness to spring tension before the process begins. And every hard part” that doesn’t measure up to the manufacturer’s original specifications, gets replaced. By the time it’s finished, a reman transmission should perform exactly like a new one. Now lets take a closer look at what sets a Street Smart Transmission apart from the rest: 


All Gears & Shafts Meet OEM Specifications 

All of the gears and the main shaft inside each remanufactured M5R4 / M5OD-R4 that we produce, is carefully inspected for cracks and tested for straightness. Any hard part that shows signs of wear or damage is immediately replaced. 


Upgraded Seals & Gaskets 

To increase longevity, every remanufactured M5R4 / M5OD-R4 transmission gets upgraded seals and gaskets that are made from a stronger heat resistant material. This upgrade is especially important for severe service (towing, off-roading, performance driving), where heat buildup can be a serious concern. 


Durable Bearings 

All of the new hardened bearings in a remanufactured M5R4 / M5OD-R48 transmission not only perform better under load. They also create less friction for reduced operating temperatures and a longer transmission life. 


Fully Inspected & Dyno Tested 

Every remanufactured Street Smart Transmission undergoes multiple inspections by Certified inspectors throughout the build process. Once complete, your newly remanufactured M5R4 / M5OD-R4 transmission is dyno tested to break-in all of the new parts, and to ensure that everything works correctly prior to shipment. And speaking of, shipping is always Free, and you also get a 3-Year/Unlimited Mile Nationwide Warranty that covers parts and labor for repairs that are performed by any licensed repair shop in the country. 


Buy Factory Direct and Save!

Save an average of $350 – $1200 than buying through a dealer or repair shop!

Learn more about Shipping, Warranty, Core Returns, and Ordering from Street Smart

About the M5R4 / M5OD-R4 Transmission

Although most people have never heard of this Ford 5 speed manual transmission, the M5R4 / M5OD-R4 transmission is actually a pretty neat little cog-swapper. It was designed and built by Mazda in the early 2000’s, and was available in the 2002 – 2003 Ford Explorer and 2002 – 2003 Mercury Mountaineer, if they were equipped with the Ford 4.0L SOHC V6 engine. What makes them so unique is the way that they gears are mounted onto the input shaft. Typically, transmission gears are mounted front to back (i.e. 4>3>2>1). But on the M5R4 / M5OD-R4 transmission, Mazda chose to mount 5th gear first, then reverse, 1st, 2nd and 3rd. this doesn’t affect the way the transmission operates in any way, but it makes it more similar to a transaxle in design than a RWD transmission. The reason that was only produced for such a short period of time has to do with the fact that most people didn’t want a manual transmission in their SUV.  


M5R4 / M5OD-R4 gear ratio 

1st = 3.38 

2nd = 2.06 

3rd = 1.30 

4th = 1.00 

5th = 0.79 

R = 3.70 


How Street Smart Transmission Works

1. Request An Estimate

Select your vehicle above to receive estimate. We will display an out-the-door price for a replacement remanufactured transmission, along with local installation estimate, shipped free to one of our recommended installers or your mechanic.

2. Order Factory Direct & Save

Buy factory direct wholesale and save an average $350 to $1200 vs. buying through shops or dealers. Special Financing available through PayPal Credit. All transmissions come with a 3 year, unlimited mile, parts and labor, nationwide warranty.

3. Free Ship + No Core Charge

Always free shipping to any commercially zoned address in the continental US*.  No up-front core charges.** At Street Smart, we do not charge you hundreds of dollars extra for core charges.
*Residential delivery add $200. We do not ship to AK, HI, PR or International. 
**Excluding Dodge Diesel 48RE, 65RFE & 68RFE models.

4. Free Core Pickup

Your mechanic installs your new transmission, and places your old transmission (core) into our reusable shipping container. You let us know when your vehicle is done, and we’ll send a truck to pick up the core free, within 24 hours.

Remanufactured M5R4 / M5OD-R4 vs. Rebuilt or Used

Reman M5R4 / M5OD-R4 vs. Rebuilt M5R4 / M5OD-R4?
Both are good options but the best option for you depends on the transmission problem, the year, make and model of vehicle, the mileage and the vehicle value. What kind of warranty coverage are you looking for? Remanufactured transmissions carry a longer, 3 year, nationwide warranty with additional upgrades while a rebuilt unit generally carries up to a 1 or 2 year warranty and upgrades vary from shop to shop.
Reman M5R4 / M5OD-R4 vs. Used M5R4 / M5OD-R4?
Buying a used M5R4 / M5OD-R4 transmission may save you money. However, if the unit does not work properly after installed, you will more than likely have to pay the labor again for removal and reinstall of the transmission PLUS the freight to ship the transmission back to the salvage yard. The additional cost may be higher than installing a reman or rebuilt transmission–not to mention the extra downtime. Warranties for a used transmission is only 30 days, 60 days, 90 days or 6 months. Used transmissions, since there is no way to know how many miles are on them, may fail at any time.

3 Year, Unlimited Miles Nationwide Warranty
Parts & Labor Coverage

Our commitment to delivering excellent service doesn’t end at the closing of the sale! Should you have any questions or concerns about your Street Smart transmission, our Product Support Team is only a phone call away.

So what does a No Hassle Warranty really mean?

• You’re covered for 3 years, unlimited miles.
• Your warranty attaches to your vehicle and transfers to new owners.
• You’re covered anywhere in the continental United States.
• You’re back on the road fast; we send you a replacement transmission. as soon as your warranty diagnosis submitted!
• We pay labor to the shop installing your replacement transmission.

Labor Warranty Defined: Up to $50/hour MItchell book hours for removal and re-installation. Must be initially installed at an auto repair shop for labor warranty to be valid. Auto repair shop is defined as repair shop whose primary business is automotive repair and provides auto repair service to the general public, and the initial install is done on a repair order.

Commercial Application Defined: Vehicles of larger than one ton (F450/F550, 4500/5500 series, motorhomes), transportation for hire (taxis, shuttles, bus,  limo) delivery service, business-owned commercial-use vehicles, police/emergency vehicles, tow trucks.

A Day in the Life of a Transmission Video

Learn more about Shipping, Warranty, Core Returns, and Ordering Works

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