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Nitro Gear & Axle Chrysler 8.75" 3 Members 742 Nodular Iron Housing


Nitro Gear & Axle

Model #NPDOC8.42

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Until now if you wanted to build a nice Mopar 8.75 inch rear you had to use rusty dropout that is 50 years old! Well, Nitro Gear and Axle has now manufactured a brand new 742 with all of the original casting stamps. Made from nodular iron and features forged bearing caps with billet Side adjusters. This unit will handle lots of power, slicks, trans brake or anything else you want to throw at it. The Chrysler/Mopar 8.75 inch differential is a very popular and robust 3rd member type rear end used in a vast array of Chrysler, Dodge and Plymouth Muscle Cars from the 60s and 70s. The growing popularity of classic Mopar vehicles has created a shortage on used 3rd member cores. Nitro Gear is now offering brand new 8.75 inch 3rd member drop-out housings, utilizing the beefy 742 casting design. The 742 housing was chosen as it uses the largest pinion bearings of the different 3rd member castings. The new Nitro housings are made of high strength Nodular Iron, with stronger bearing caps, and billet adjuster nuts for added strength.


  • Chrysler 8.75 Inch Nitro 742 Nodular Iron Drop-Out 3rd Member
  • Differential: Chrysler 8.75 Inch (742 Case)
  • Gear Ratio: All Ratios
  • Material: Nodular Iron Housing w/Forged Caps
  • Featuring: Billet Aluminum Side Adjusters and Locks
  • Manufacturer: Nitro Gear and Axle
  • Warranty: 1 Year
  • 1960-1972 A Bodies
  • 1970-1972 Plymouth Duster
  • 1960-1972 Plymouth Valiant
  • 1961-1962 Dodge Lancer
  • 1964-1969 Plymouth Barracuda
  • 1963-1972 Dodge Dart
  • 1969-1972 Dodge Dart Swinger
  • 1963-1966 Dodge Dart Wagon
  • 1971-1972 Dodge Demon
  • 1962-1972 B Bodies
  • 1962-1964 Plymouth Savoy
  • 1968-1972 Plymouth Roadrunner
  • 1965-1972 Plymouth Satellite
  • 1970 Plymouth Superbird
  • 1962-1964 Plymouth Fury
  • 1962-1970 Plymouth Belvedere
  • 1962-1971 Plymouth GTX
  • 1966-1972 Dodge Charger
  • 1965-1972 Dodge Coronet
  • 1962-1964 Dodge Polara
  • 1969 Dodge Charger Daytona
  • 1968-1971 Dodge Super Bee
  • 1965-1972 C Bodies
  • 1965-1972 Plymouth Fury
  • 1966-1969 Plymouth VIP
  • 1965-1971 Chrysler 300
  • 1965-1972 Dodge Polara
  • 1965-1972 Dodge Monaco
  • 1965-1972 Chrysler Newport
  • 1965-1972 Chrysler New Yorker
  • 1967-1972 Chrysler Imperial
  • 1957-1966 Chrysler Imperial D Body
  • 1970-1972 E Bodies
  • 1970-1972 Plymouth Barracuda
  • 1970-1972 Dodge Challenger
  • 1971-1972 B100 and B200 Vans
  • 1957-1972 D100 and W100 1/2 Ton Pickups
  • 1964-1970 A100 Trucks and Vans
  • 1967-1970 A108 Trucks and Vans

Proposition 65

/!\ warningWARNING: Cancer and Reproductive Harm

Vehicle Engine Notes
Dodge Charger

Dodge Dart

Plymouth Barracuda

Plymouth Valiant

Nitro Gear

Gears and axles are two of the most overlooked components in any car. Low-quality gears and axles can lead to poor performance and lower fuel economy, so it is important to give your car the upgrade it needs with Nitro Gear and Axle products. Vivid Racing carries a variety of Nitro Gear products, allowing you to optimize your car's performance and efficiency.

What Is Nitro Gear?

Founded in 2006, Nitro Gear specializes in creating unique and superior applications for the axle and differential industry, crafting custom products to meet the ever-changing needs of consumers. Nitro Gear parts are always on the cutting edge of the industry, using the latest and greatest technology to improve driving performance.

What Separates Nitro Gear From the Competition?

While Nitro Gear and Axle has only been in business for around 15 years, they have quickly shot past the competition to earn a reputation as the very best gear and axle manufacturer currently on the market. Below, learn more about what separates Nitro Gear parts from the competition.

Better Materials, Machining, and Processes

Nitro Gear products have earned a place in the top tier of the industry because they never settle for subpar materials. All Nitro Gear parts use only high-quality materials, the best available machining, and superior lapping and heat-treating processes.

Multi-Point Inspection Process to Ensure Long-Lasting Products

With any product, you need a thorough inspection process to make sure no bad apples slip through the cracks. Nitro Gear has a multi-point inspection process to make sure all of our products are durable and ready for any challenge. We want Nitro Gear products to last, and that is why we offer a warranty to cover any manufacturer defects.

Easy Setup

You do not have to be an engineering expert to set up our products. We strive to make simple and straightforward products, allowing for easy setup and installation.

Nitro Gear and Axle Products From Vivid Racing

If you are looking for gear or axle products, Nitro Gear has everything you need. Vivid Racing has partnered with Nitro Gear to offer customers all of the best Nitro Gear products at an affordable price. If you are interested in upgrading your gear and axle, contact Vivid Racing today by calling (480) 966-3040.

All Nitro Gear & Axle brand products are warrantied to be free of manufacturer defects for the specified period. Warranty requests must be made by the original purchaser and submitted by the dealer purchased from. Any parts sent for warranty consideration must be pre-approved and shipped prepaid freight to our facility with copy of RGA for our inspection & determination. We will not pay for labor, shipping cost, loss of revenue or perishable goods, commercial losses, costs of telephone calls, shipping or general inconvenience. This is our only warranty expressed or implied. Unauthorized warranty returns may be refused. Warranty generally covers MFG defects in material or workmanship. Abuse, overloading, improper lubrication, misuse, commercial or competition use voids warranty. Normal characteristics are not warrantable, such as Gear whine. Minor cosmetic flaws, dings, burrs from shipping or manufacturing, are not considered defect, it is installer responsibility to address these at time of install. Customer is responsible for shipping charges if warranty is granted. Warranty is for the original purchaser/user, is not transferable. Warranty covers one replacement or credit solely at our discretion. Warranty determinations are at our sole discretion.

Chromoly front Axles, Excalibur Joints, 30/30 Birfield kits - Warrantied against manufacturing defects for the life of the vehicle. These products are also covered for Breakage. The Shaft / joint must be BROKEN. Wear, twisting, bending are not warrantable. Damages caused by failure of other parts are not warrantable, for example broken U-joint (other than Nitro Excalibur) causing damage to Axle ears.

Rear Chromoly Axles - Warrantied against manufacturing defects for 5 years. These products are also covered for Breakage. The Shaft must be BROKEN. Worn, twisted, or bent axles are not warrantable.

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