94-98 Dodge 12 Valve AFC Spring Kit

1994-1998 12 Valve Cummins AFC Spring Kit

Industrial Injection SKU: 232708
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Regular price $3695
Regular price $000 Sale price $3695
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1994–1998 12 Valve Cummins AFC Spring Kit (P7100 Injection Pump)

Improve fuel control and boost-driven fueling performance with the 1994–1998 12 Valve Cummins AFC Spring Kit. Designed for the Bosch P7100 injection pump, this upgraded spring provides a stiffer spring rate that allows for a slower, more controlled ramp of fueling in higher boost performance applications.

By improving how the AFC (Air Fuel Control) system responds to boost pressure, this kit helps deliver smoother fueling transitions and improved efficiency, especially on trucks equipped with upgraded turbochargers and performance fuel system modifications.

This complete AFC spring kit is a simple yet effective upgrade for diesel enthusiasts looking to fine-tune fueling control while supporting higher boost levels.

Key Features

Stiffer AFC Spring for Better Fuel Control
Designed with a stiffer spring to allow for more controlled fueling as boost increases, improving drivability in performance applications.

Improved Fueling Efficiency
Helps optimize fuel delivery by better matching fueling ramp to boost pressure.

Designed for P7100 Injection Pumps
Compatible with the Bosch P7100 injection pump used on 1994–1998 12 valve Cummins engines.

Complete Installation Kit
Includes everything needed to upgrade the AFC spring within the injection pump.

Performance Benefits

Upgrading the AFC spring can help improve how fueling responds to boost pressure, which is especially beneficial for trucks running modified fueling setups.

Benefits include:

  • More controlled fuel ramp under boost

  • Improved throttle response

  • Better drivability in performance setups

  • Increased fueling efficiency

  • Ideal for trucks with turbo or injector upgrades

Applications

This Cummins AFC Spring Kit is commonly used for:

  • 12 valve Cummins performance builds

  • P7100 injection pump tuning

  • Turbo upgrade setups

  • Fuel system modifications

  • Diesel performance tuning

Vehicle Compatibility

Compatible with 1994–1998 Dodge Ram Cummins trucks, including:

  • 1994–1998 Dodge Ram 2500 5.9L 12 Valve Cummins

  • 1994–1998 Dodge Ram 3500 5.9L 12 Valve Cummins

Also compatible with various industrial and agricultural engines using the Bosch P7100 injection pump.

 
Shipping information

Free economy ground shipping on most orders over $200. This includes lower 48 United States only. Excludes products that must ship freight.

Core Return Info

Read Carefully!

When you purchase a product from our website that has a core requirement, you have two options:

1. You choose to pay the core charge and we will ship the product right away, then once we receive the cores you will be refunded the core charge if your cores pass our inspection qualifications. This is the preferred choice and has the least delays. 

2. You choose to send in your cores before we ship the product that was purchased. This choice has the risk of delayed shipment of your purchased product and our inventory is not guaranteed by the time we receive your cores. You will need to follow all of the instructions below as quickly as possible so that you can get your purchased product and we can receive the cores. When you choose this option you acknowledge that by the time we receive your cores, our inventory could have change and there could be a delay in your shipment. 

 

Please return all cores to:



Industrial Injection Core Returns
2858 South 300 West
Salt Lake City, Utah 84115

INCLUDE RA# THAT WAS ISSUED AT TIME OF PURCHASE! If RA # is lost, please call Customer Service at (800) 955-0476. Have your original invoice at time of phone call to give all appropriate information for return.

Core return freight is the responsibility of the customer

FULL CREDIT WILL BE GIVEN WHEN: 

In order to receive full core credit, your core(s) must be returned within 90 days from receipt of order. It must be as is “off the engine.” Full core credit will be given if core meets acceptance criteria. Cores that are damaged during shipment to Industrial Injection are the responsibility of the customer and their shipping company.

½ CORE CHARGE CREDIT WILL BE GIVEN WHEN:

  • Slightly damaged housing or camshaft
  • Missing parts such as FCA

No Core Credit issued when:

  • Core is seized or hydraulic head is cracked
  • Excessive damage ( Heavy use of Bio-diesel and rust are common causes for unacceptable core)
  • Core is fire damaged
  • Core is returned after 90 days/3months

Please do the following when returning a core:

  • Make sure you have removed all fittings from your old unit
  • Drain all fuel and oil from unit
  • Package cores so that fuel and oil does not escape from the package

NOTE: packages that have fuel or oil residue on the outside of the box during shipping will not be delivered by UPS or the postal service which will cause delays.

  • Please re-use boxes and bags that parts were shipped in originally. These boxes are UPS approved to reduce damage while being handled in freight.
  • All shipping charges are the responsibility of the customer
  • Please write on the box “Core Return” and have RA # clearly written on the outside of box
  • Include copy of original invoice and RGA inside box

PLEASE RETAIN RA#, INVOICE # AND TRACKING NUMBER UNTIL CREDIT IS RECEIVED BY YOU. We do not research by customer name, only invoice # or RA #.
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