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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
We are open Monday-Friday from 8am-6pm EST
Yes, customers located in and around the the Piedmont area are welcome to pick up their items from our retail location during normal business hours. Our address is:
Elite Race Fab
1514 Holbrook St Suite D-F
Greensboro, NC 27403
Elite Race Fab offers free ground shipping & handling to our retail customers within the lower 48 contiguous United States on most orders totaling $159.99 and higher, when the item being purchased is not a Freight/LTL item! Orders under $159.99 will be subject to a nominal $13.99 Flat shipping charge. Some exceptions and/or exclusions apply, in those scenarios you will be advised of any additional charges in the item details/description stating shipping exclussions/freight shipping required etc.
In regards to expedited and international shipping each order will need to be quoted on a case by case basis. You can obtain a quote two ways:
- From your shopping cart select "Request a Quote" prior to placing your order. We will review your proposed order and promptly respond with shipping estimates.
- Complete your order ahead of time indicating either expedited or international shipping during the checkout process. We will promptly determine shipping rates for your order and email you for approval and additional payment.
-Give us a call and we can ensure your item is shipped right then, to ensure you have it in time for your deadline.
We have been committed to offering all of our customers the lowest pricing throughout our website day in and day out. We value your business so much that we go a step further than our competitors. We use a third party software that proactively monitors all our competitor's websites/pricing so that we can make adjustments accordingly if needed to have the lowest prices. Thats right, no need to spend hours searching for the lowest prices, as ours will be the lowest.
As far as price matching, we dont want to write a check we cant cash, but we certainly want to earn your business. With that said, we will go above and beyond to match our competitor's pricing when it is needed. Simply email us, click the live contact button, or give us a call and be sure to have a link to our competitor's site and please factor in any shipping and handling their website will be charging. We will then ensure you get the lowest price, and either match or beat their pricing.
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