DNJ Components

DNJ Components Small town shop that manufacturers transmission parts and builds transmissions, specializing in Drag Racing and Diesel High Performance transmissions.

DNJ Components has been in business for over 10 years. We strive to deliver our customers with quality performance parts. Our parts list can be found on our website. If you have any questions feel free to contact us.

DNJ started in 2008 with an idea. After building transmissions his whole life, 3 generations deep, David had an idea abo...
09/02/2026

DNJ started in 2008 with an idea. After building transmissions his whole life, 3 generations deep, David had an idea about the governor pressure solenoids in Dodge transmissions. After many months of drawing, designing, having models made at a local machining shop, seeing how it fit and worked and making changes to make it perfect before releasing to the public, we knew making transmission parts wasn't easy. Its a hard route to go from an idea to a drawing on paper to a finished working model in hand. The DCF1 was that part.
Years later he saw a problem with the Dodge 68RFE valve body warping and decided a billet channel plate could resolve most, if not all the issues. He had no clue what was about to happen. DNJ was not prepared for the publics reaction and we failed by not being able to keep up with sales. That was our DCF2 & DCF2-19 channel plates. Now here we are with our DJAK 10L1000 valve bodies. We have learned from past mistakes. After designing, finding issues, redesigning, testing for over a year, before releasing to the public. Yes there was a few small issues in the beginning, ask any customer, we stand behind our parts 1000% if theres an issue, return it and we will send you a new part or refund your money for the part. We are proud to put our name on our DNJ parts. Our family has endured alot over the last 18 years since this company was started. At the end of the day, we know it all starts with an idea. Having those you call friends and family that support you along the way, that is what has kept us going. The customers who call and place orders,the friends who say hey is there anything I can do. They get it. They know the efforts, the hours of sleep lost, the ball games missed, the dinners at work instead of at home.
An idea has a long road to travel before its ready for the public. We know. If you have an idea, reach out to us. We know what its like to have haters, but also know what it means to have people in your corner supporting you. We want to support you. We want to see your ideas be made into a product you can hold in your hand. We started with making transmission parts, but we have grown into so much more. DNJ is a real small town, small family owned and ran business. Owners are born and raised in Missouri, we are proud to put a Made in USA sticker on ALL our products. We make real American made products, out of real American made materials, in real American made machines, with a real American machinest, who also happens to be a real Cad/Cam design guy as well. So if you have an idea, let us know, Adam, here at the shop would be happy to assist you. If you'd like we can help you with getting your idea made into a reality. All big and small companies started with an idea, we are here to make your ideas a reality. Check out the photos and see what we are capable of. You never know where you might see some of the work we've been able to do. One of them being a very well known sporting goods store we were fortunate enough to be able to assist with a few of their projects this year.

We will be closed this year for vacation from Friday July 3rd through Sunday July 12th, returning Monday July 13th. We h...
06/18/2026

We will be closed this year for vacation from Friday July 3rd through Sunday July 12th, returning Monday July 13th. We hope everyone has a safe and happy 4th of July this year!

We are open
Monday -Thursday
6am-5pm.
Give us a call for your parts or transmission needs. 417-994-2333 [email protected]

DCF1 is NOT out of stock and still is in production by DNJ since 2008. These were just machined, but they are in stock r...
05/28/2026

DCF1 is NOT out of stock and still is in production by DNJ since 2008. These were just machined, but they are in stock ready to ship.
If your distributor says its not available, give us a call directly. 417-994-2333 extension 1

On Monday we will be closed,  as our team pauses to remember and honor the brave men and women who made the ultimate sac...
05/25/2026

On Monday we will be closed, as our team pauses to remember and honor the brave men and women who made the ultimate sacrifice for our country.
Our freedom was not free, it was because of those individuals that lost their lives. Our thoughts and prayers go to the families who lost a loved one. We are forever grateful for their courage and selfless service.Wishing you a meaningful Memorial Day.

When we are not spending our days building transmissions or re-designing and manufacturing transmission parts such as TH...
04/21/2026

When we are not spending our days building transmissions or re-designing and manufacturing transmission parts such as THE FIRST 68 BILLET CHANNEL PLATE or THE FIRST 10 SPEED VALVE BODY, we are doing one offs and little odd jobs. Todays high light is what started as a small business, an original to our area, a little company that has dabbled in the fishing lure business. We were contacted about taking their lure molds and making some adjustments to fit their new machines. The Big Man himself said he wanted to stay in USA and a local as possible. Walnut Grove is almost as local to Springfield as you can get. Now since how this lure company is now a REEL (see what I did there) big company I am not able to say any names until they do their own publicity thing. But I did get the approval to talk about we are doing and pisting our own photos. So heres it is... Our parts are still running on our other machines but we have 1 machine that is working just on this. We are excited for this new endeavor. If you have an idea or a part that needs a little machine time spent on it, give us a call at 417-994-2333 option 1 or email us at [email protected].

04/01/2026
03/31/2026

The 2026 Racing season has officially started. If you are looking for a track series to join, Titans of 10.5 is a great choice. The first race is coming up in a couple of weeks on April 17-18 at Centerville Dragway in Dardanville Arkansas. Thank you for all the sponsors, dragstrips and especially the fans that come watch for keeping dragracing alive. If your transmission needs a little help staying alive with a refresh or a complete build give us a call. 417-994-2333 ext. 3. We are open Monday -Thursday 6am -5pm.

Address

110 N. Washington Avenue
Walnut Grove, MO
65770

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm

Telephone

(417) 994-2333

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