Vortech Tuner Kit w/ V-3 Si-Trim - Polished - With Charge Cooler (1996-1998 4V 4.6 Mustang Cobra) 4FK218-118L
Polished V-3 Si-Trim Charge-Cooled Tuner Supercharger Kit for 1996-1998 Mustang Cobra 4.6L 4V
The Vortech Superchargers Tuner Kit (PN 4FK218-118L) is a charge-cooled tuner kit engineered specifically for 1996-1998 Ford Mustang Cobra models equipped with the 4.6L 4-valve DOHC V8. This exact configuration features a polished V-3 Si-Trim internally lubricated centrifugal supercharger paired with Vortech's air-to-water charge cooler system, providing enhanced thermal control and higher power potential for serious performance builds.
This kit DOES include a charge cooler. It is still a tuner kit, meaning fuel system components and ECM calibration are intentionally excluded to allow professional tuners full control over fueling, ignition timing, and boost strategy.
What This Part Number Is (and What It Is Not)
- This kit IS: Tuner kit, V-3 Si-Trim, polished finish, WITH air-to-water charge cooler (PN 4FK218-118L)
- This kit is NOT: A complete, street-legal supercharger system
- This kit is NOT: A non-charge-cooled tuner kit
- This kit is NOT: CARB compliant or emissions legal
V-3 Si-Trim Supercharger Technology
The V-3 Si-Trim utilizes Vortech's self-contained internal lubrication system, eliminating the need for engine oil feed and return lines. Vortech's SQ (Super Quiet) gear drive delivers smooth, quiet operation while maintaining excellent airflow efficiency across the RPM range.
The advanced impeller and compressor housing - developed in Vortech's supercharger test cell - support aggressive power levels while reducing heat generation and improving long-term durability.
Integrated Air-to-Water Charge Cooler System
This tuner kit includes Vortech's integrated air-to-water, dual-pass charge cooler system, which increases intake air density and supports higher boost levels. Vortech states charge-cooled High Output configurations for this Cobra platform can increase horsepower from 305 to 484 and torque from 285 lb./ft. to 423 lb./ft. when paired with proper supporting modifications.
Important: Charge-cooled systems require a battery relocation kit (PN 8N150-010, sold separately).
Key Features
- Vortech V-3 Si-Trim centrifugal supercharger with internal lubrication
- Integrated air-to-water, dual-pass charge cooler
- High-efficiency impeller and housing developed in Vortech's supercharger test cell
- Heat-resistant silicone inlet and discharge couplers with stainless steel clamps
- OEM-type aluminum mounting bracket for factory-installed appearance and rigidity
- High-flow bypass valve for smooth, surge-free compressor operation
Installation
- Estimated installation time: Approximately 10 hours
- Professional installation and custom tuning strongly recommended
Emissions & Legal Notice
- NOT AVAILABLE OR LEGAL FOR SALE IN CALIFORNIA
- Tuner kits are NOT CARB legal
- Legal in California only for racing vehicles that may never be registered or driven on public highways
- Installation on emissions-controlled vehicles may violate U.S. federal law (42 U.S.C. 7522(a)(3))
Additional Hardware
- Hardware Kit: 4FK100-004 (includes spare/replacement bolts and supercharger mounting hardware)
Tuner Kits & Supercharger Options
Tuner kits are the same as complete systems except they exclude fuel system upgrades and ECM reprogramming. This allows custom tuners and racers to select injectors, pumps, and engine management tailored to specific horsepower goals.
For sustained high-load applications, Vortech also offers engine-oil-fed supercharger options and related upgrades to match different racing styles and boost levels.
Quick Specs
- Manufacturer: Vortech Superchargers
- Part Number: 4FK218-118L
- Application: 1996 Ford Mustang Cobra 4.6L 4V; 1997 Ford Mustang Cobra 4.6L 4V; 1998 Ford Mustang Cobra 4.6L 4V
- Kit Type: Tuner Kit
- Supercharger: V-3 Si-Trim (internally lubricated)
- Finish: Polished
- Charge Cooling: Air-to-water, dual-pass (included)
- Estimated Install Time: ~10 hours
FAQs
- Does this tuner kit include a charge cooler?
Yes. PN 4FK218-118L includes Vortech's integrated air-to-water charge cooler system. - Is this kit street legal?
No. This tuner kit is not CARB compliant and is intended strictly for off-road and racing applications.
Fitment
- 1996 Ford Mustang Cobra 4.6L 4V
- 1997 Ford Mustang Cobra 4.6L 4V
- 1998 Ford Mustang Cobra 4.6L 4V
Why Buy from Beefcake Racing?
Charge-cooled Vortech Cobra tuner kits differ by supercharger model, finish, and lubrication method. Beefcake Racing ensures you receive the exact V-3 Si-Trim polished charge-cooled tuner kit, understand what is included versus optional, and avoid costly configuration mistakes.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

