Pre-Qualify For Easy Financing!
$40 Off Over $400 Code: JUL40
Free Shipping Over $75*
Select your vehicle

Part no: HOW-CAYJ258

Howell Fuel Injection Conversion TBI Kit - California Legal

Free $50 gift card when buying this item - Ends 07/17/20

This item is excluded from all sales and promotions.

Save for Later

Product Details


Important Notes:

  • This product may not be combined with any other offers or discounts
  • Emission legal in all 50 states per CARB EO#D452

Required Parts by Manufacturer:

  • A K&N Air Cleaner Assembly, KN-601120, is required


  • 1987-1991 Jeep Wrangler YJ


The Howell Fuel Injection Conversion TBI Kit is an essential upgrade for your Jeep. Two-barrel carburetors have been a disaster to keep running correctly. These computer controlled fuel injection systems are less sensitive to shock and vibration that results from extreme 4-wheeling. This system includes all essential components including a two-barrel TBI unit with internal throttle position sensor, an idle air controller, and an on-board computer with no programming required. If you are looking for better driveability, improved fuel mileage, and less maintenance, this is the way to go.

Product Details:

  • For 4.3L GM V6 engine
  • Improves driveability and fuel economy
  • Less sensitive to shock and vibration

Parts Included:

  • (1) Howell Fuel Injection Conversion TBI Kit - California Legal
  • Includes throttle body, inline fuel pump, fuel line, wiring harness, ECM, gaskets and washers, 02 sensor bung (weld-in), 02 sensor, temperature sensor, adapter plate, hardware, and instructions

Years Covered:

1987, 1988, 1989, 1990 and 1991

For California residents: Proposition 65 Warning

Vehicle Fitment

1987-1991JeepWrangler YJ

Additional Information

SKU AliasesCA/YJ258