The Boss Hog 25113 is a Street Bandit series torque converter for the Ford C4 automatic transmission, built for the small bellhousing with the 157-tooth flexplate. It runs a 2,800 to 3,200 RPM stall and is a super lightweight converter, in some cases more than 20 lb lighter than stock, which cuts rotational mass for quicker response. It suits choppy cams and lighter vehicles. Internally it uses a 9.6 in core, a 26-spline CNC-machined turbine hub, a hardened chrome moly impeller hub, Torrington-style encased bearings, and a modified extreme-duty stator, and it stands 5-5/8 in tall. Every unit is leak and pressure tested, digitally balanced, and made in the USA. It is a non lock-up converter.
- Series: Street Bandit
- Transmission: Ford C4
- Stall Speed: 2,800-3,200 RPM
- Core: 9.6 in (super lightweight)
- Bolt Circle: 10.5 in
- Turbine Spline: 26 (CNC-machined)
- Height: 5-5/8 in
- Bellhousing: Small; use 157-tooth flexplate
- Impeller Hub: Hardened chrome moly
- Bearings: Torrington-style encased
- Stator: Modified extreme duty
- Crank Pilot: 1.375 in
- Bolt Size: 3/8 x 16 TPI (Grade 8)
- Anti-Balloon Plates: No
- Lock-Up: No
- Balance: Digitally balanced
- Build: Leak & pressure tested; made in USA
- Part Number: 25113
WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
FAQ
What transmission does the Boss Hog 25113 fit?
It fits the Ford C4 automatic transmission, built for the small bellhousing using the 157-tooth flexplate.
What is the stall speed?
The 25113 has a 2,800 to 3,200 RPM stall. Advertised stall varies with your vehicle setup.
Is this a lock-up converter?
No. The 25113 is a non lock-up converter.
What are the key fitment specs?
It is a 26-spline turbine hub with a 10.5 in bolt circle and a 1.375 in crank pilot, and it stands 5-5/8 in tall.
Which Boss Hog series should I choose?
Boss Hog groups these converters by build level. Night Stalker suits stock to mild combinations, Street Bandit is the step up once you have upgraded two or more items such as intake, heads, headers, exhaust, cam, or gearing, and the Out Law racing series is for power adders like nitrous, a supercharger, a turbocharger, or a trans brake.