JEEP NSG370 TRANSMISSION FOR SALE

Jeep NSG370 Transmission for Sale: Elevate Your Jeep‘s Performance

Is that a Jeep Wrangler JK rusting in your garage? A broken transmission, perhaps? Take a look at this Jeep NSG370 transmission for sale here. A reliable and capable 6-speed manual gearbox, this transmission will operate smoothly while cruising the highway or going on off-road adventures , a classic Jeep manual transmission setup. It has gained a reputation among enthusiasts for its 6-speed flexibility (including highway overdrive 6th gear), marking its place as a popular choice. This Jeep NSG370 transmission for sale here will be a great buy for your Wrangler JK service, manual conversion, or custom project that requires a reliable 6-speed transmission.

What is the Jeep NSG370 Transmission?

The NSG370 was designed by New Venture Gear in partnership with Mercedes / Daimler and entered Jeep production in 2005. Important note about its predecessor: In Wrangler applications, the NSG370 was designed as a successor to the NV3550 5-speed manual (which had itself replaced the AX-15 in 2000). The full Wrangler manual transmission progression is:

The NSG370 is NOT a direct successor to the AX-15 (the NV3550 was). The NSG370 is the successor to the NV3550, with key improvements:

• 6 forward gears (vs 5 in NV3550) for highway overdrive

• Aluminum case (vs cast iron in NV3550) for weight savings

• Dual mass flywheel for vibration damping

• More refined shifting with improved synchronizers

NSG370 Designation Explained

• “NSG“: Stands for “New Series Gear” or “New Standard Gear” (sources vary on the exact meaning)

• “370“: Indicates the approximately 370 N-m (273 lb-ft) torque capacity rating

So “NSG370” essentially means “the New Series Gear transmission with 370 N-m torque capacity.”

Vehicle Applications

The NSG370 was used in:

The Mercedes-Daimler Connection

The NSG370 design has roots in a Mercedes-Benz Sprinter van transmission that NVG and Mercedes / Daimler jointly developed during the DaimlerChrysler era. This shared heritage is why the NSG370 uses metric Mercedes-style fluid specifications (API GL-3) rather than the typical 75W-90 used in older American manual transmissions.

Key Engineering Features of the NSG370

• 6-Speed Manual with Overdrive 6th: Typical gear ratios 1st (4.46:1), 2nd (2.61:1), 3rd (1.72:1), 4th (1.25:1), 5th (1.00:1 direct), 6th (0.84:1 overdrive), Reverse (4.06:1)

• Cast Aluminum Case: Lighter than NV3550’s cast iron case, adequate strength for application

• Dual Mass Flywheel (DMF): Reduces vibration transmission and smooths shifts

• Fully Synchronized Forward Gears: 6 synchronizers for smooth shifting throughout the gear range

• Internal Shift Linkage: Direct top-mounted shifter

• Specific GL-3 Fluid Required: Different from older Jeep manuals (do not use GL-4 or GL-5 fluids)

• 273 lb-ft Torque Capacity: Adequate for 3.8 V6, 3.6 Pentastar, 3.7 PowerTech, and 4.0L inline-6

Common NSG370 Service Items (Honest Disclosure)

Honest disclosure of known service items:

• Dual Mass Flywheel (DMF) Failure: Most common high-mileage service item (100,000-150,000 miles). Symptoms: clutch chatter, vibration, eventually shudder during engagement. Replacement is expensive ($800-1,200 for the DMF alone, plus clutch service).

• Shifter Notchiness: Some users report the NSG370 feels “notchy” compared to older AX-15 or NV3550 transmissions. This is partly design characteristic and partly synchronizer wear at higher mileage.

• 5th and 6th Gear Synchronizer Wear: At high mileage (150,000+ miles), 5th and 6th gear synchronizers can wear, causing grind on shifts.

• Clutch System Hydraulic Issues: The hydraulic clutch master and slave cylinders are common service items.

• Fluid Type Issues: Using wrong fluid (e.g., 75W-90 GL-4) can damage NSG370 synchronizers and brass internals. Must use API GL-3 manual transmission fluid.

• Input Shaft Bearing Noise: Some high-mileage NSG370s develop input shaft bearing noise.

The NSG370 is generally durable when maintained per Jeep specifications with proper fluid. Service interval: fluid every 30,000-50,000 miles.

Why Choose a Used Jeep NSG370 Transmission?

• Cost savings vs reman ($1,499 used vs $2,000-$3,500 reman plus core)

• Direct OEM fit for Wrangler JK 2007-2018, Wrangler TJ final year 2005-2006, Liberty KJ 2005-2007

• 6 forward gears , better highway efficiency than older 5-speed manuals

• Aluminum case , lighter than NV3550 cast iron

• Strong aftermarket support , parts widely available

• Dual mass flywheel , smoother operation when in good condition

Here at Vaz Auto Solutions, you’ll find this Jeep NSG370 transmission for sale at the most reasonable price possible, with all 6 forward gears tested, reverse confirmed, dual mass flywheel condition assessed (critical service item), and donor vehicle documented.

FAQs

What is the Jeep NSG370 transmission?