Zumbrota Drivetrain NTC261GXHD-1 New NP261XHD Transfer Case Manual Shift 29-Spline

The Zumbrota Drivetrain NTC261GXHD-1 is a brand-new NP261XHD Extra Heavy Duty transfer case engineered as the OEM replacement unit for GM 2500HD and 3500HD trucks equipped with 6.6L Duramax or 8.1L Vortec engines and mated to either the Allison automatic or ZF 6-speed manual transmission.

Unlike remanufactured alternatives, this unit is built entirely from 100% new components to OEM specifications, delivering factory-fresh performance and reliability right out of the box.

Key Features:

• New OEM-spec construction — fully built with 100% new parts, not remanufactured
• Manual shift operation (RPO/Option Code: NP2)
• 29-spline input shaft — compatible with Allison automatic and ZF 6-speed manual transmissions
• Internal spline front output shaft
• 31-spline rear output shaft — 1.608-inch outside diameter slip yoke style
• Cases and internal components inspected and tested for manufacturing accuracy and defects
• Every finished unit spin tested for shiftability and noise
• Quality inspected throughout the entire manufacturing process
• All parts cleaned and inspected prior to assembly
• Shipped in high-density plastic totes to prevent in-transit damage

Cross-Reference Numbers:

• Hollander Numbers: 412-458, 412-542, 412-604
• Other Numbers: UMT139-4
• GM Tag Numbers: 12573381, 12579907, 12581002, 12588514, 15023641, 15772804, 24228406, 24238186, 24238839

Backed by a 2-year limited warranty, this transfer case is the ideal choice for HD truck owners who demand a new-condition drivetrain component without compromise.