The Boss Hog 48441 Night Stalker Series Torque Converter is built for GM 700R4 transmissions using a 298mm, 3-step input shaft (LT-based engine applications). With a stall range of 1600–2200 RPM and a factory-size 12" core, this converter is ideal for stock to mildly upgraded street builds. It offers excellent drivability while shedding unnecessary weight for improved efficiency.

Constructed using high-quality components like a hardened chromoly impeller hub and Torrington-style bearings, this lock-up converter is tested, balanced, and built to last. Made in the USA and built for consistent performance under daily driving conditions.

Upgrade Tip: Step up to the Street Bandit Series for builds with cam, exhaust, or intake upgrades. Choose the Outlaw Series for power adder setups like nitrous, turbos, or superchargers.

Key Features

• 1600–2200 RPM stall speed range

• Lock-up compatible

• Fits GM 700R4 (298mm, LT-type, 3-step input shaft)

• 12" factory-size core

• 30 spline input (count smaller splines)

• 1.703" crank pilot

• 10.75" bolt circle

• Bolt size: 10mm x 1.5 pitch (Class 10)

• Hardened chromoly impeller hub

• Torrington-style encased bearings

• Modified heavy-duty stator

• Fins are 4-corner tack welded or furnace-brazed

• No anti-balloon plate

• Leak and pressure tested

• Digitally balanced

• Steel construction with black painted finish

• Made in the USA

• Sold individually

Vehicle Fitment

• GM vehicles equipped with 700R4 automatic transmission

• 298mm LT-type builds with 3-step input shaft

• Ideal for stock or mild camshaft, lightweight street applications

What's Included

• 1x Boss Hog 48441 Night Stalker Lock-Up Torque Converter

Installation Tips

• Use Type F transmission fluid

• Install an auxiliary transmission cooler

• Use blue Loctite on all converter bolts