Product Description
CUMMINS 3282437 OEM AFC BOOST REFERENCE HOSE (AIR FUEL CONTROL TUBE) – 5.9L 12V (1989–1993)
The genuine CUMMINS 3282437 AFC boost reference hose is the factory air-fuel control tube used on 1989–1993 5.9L 12-valve Cummins engines equipped with the VE rotary injection pump. This hose supplies the correct turbocharger boost signal to the AFC diaphragm, allowing the VE pump to deliver additional fuel in proportion to boost pressure. A cracked, leaking, or dry-rotted hose will cause poor throttle response, reduced power, excessive smoke, or sluggish turbo performance.
This is the correct OEM-formed hose engineered for heat, vibration, and boost pressure stability—critical on first-gen Cummins trucks. After decades of service, the original hose is often brittle, leaking, or missing. Replacing it with a true Cummins OEM hose ensures the VE pump receives an accurate boost signal for clean, efficient fueling.
Key Features
- Genuine Cummins OEM boost reference hose – correct material, bends, and diameter.
- Restores proper AFC boost signal to the VE injection pump.
- Prevents overfueling, smoke, and lag caused by leaking or collapsed hoses.
- Direct-fit for 1989–1993 VE-pump 5.9L Cummins engines.
- Durable, heat-resistant construction designed for turbocharger proximity.
Fitment Details
- Engine: 5.9L Cummins 12-Valve VE Pump (1989–1993)
- Application: Boost reference line from intake / compressor cover to AFC diaphragm on VE injection pump
- Chassis: Dodge Ram 2500 & 3500 (First Gen)
- Notes: Replace any cracked or oil-saturated hoses to ensure proper fueling control.
Cross-Reference & Companion Cummins Parts
These genuine Cummins parts are commonly serviced alongside the AFC hose and are available at CPP Diesel:
- CUMMINS 3918195 VE INJECTION PUMP FUEL INLET BANJO BOLT
- CUMMINS 3939258 BOOST PRESSURE SENSOR (5.9L)
- CUMMINS 3284237 BOOST PRESSURE LINE FITTING
- CUMMINS 3904374 TURBO WASTEGATE / BOOST SIGNAL FITTING
- VIEW ALL GENUINE CUMMINS OEM PARTS
Common Cummins reference numbers: 3282437, 3282437NX (verify by VIN/ESN).
Installation Notes
- Replace any cracked or hard plastic reference lines immediately.
- Ensure proper routing to prevent melting from exhaust manifold heat.
- Verify tight sealing at both ends for accurate AFC response.
- Clear any debris from the turbo reference port before installation.
Specifications for cummins 3282437
| Attribute | Value |
|---|---|
| Brand | Cummins (Genuine OEM) |
| Cummins Part Number | 3282437 |
| Alternate Numbers | 3282437NX (reman listing – verify) |
| Function | AFC boost reference hose / VE pump air-fuel control tube |
| Engine Compatibility | 5.9L Cummins 12-Valve VE Pump (1989–1993) |
| Vehicle Fitment | Dodge Ram 2500 / 3500 (First Gen) |
| UPC | 190910285980 |
| GTIN | 190910285980 |
| Shipping Weight | Approx. 0.05 lbs |
| Shipping Method | Standard ground shipping |
| E-Codes / Emissions | Not emissions-critical; VE pump control component |
| Prop 65 Warning | WARNING: May expose you to chemicals known to cause cancer and reproductive harm. See www.P65Warnings.ca.gov. |
| Country of Origin | As labeled by Cummins (varies by batch) |
Frequently Asked Questions
WHAT DOES THIS HOSE DO ON A 12-VALVE CUMMINS?
It carries turbo boost pressure to the AFC on the VE pump, allowing additional fueling as boost increases. Without it, the engine will feel weak, smoky, or sluggish.
WILL THIS FIT ALL 1989–1993 FIRST GEN CUMMINS TRUCKS?
Yes, this is the correct Cummins OEM AFC hose for all VE-pump 5.9L 12-valve engines. Always verify with your VIN/ESN when unsure.
WHAT ARE SYMPTOMS OF A BAD AFC BOOST HOSE?
Poor throttle response, excessive smoke, laggy turbo behavior, or lost power. A leaking hose prevents the pump from receiving proper boost reference.
IS THIS A GENUINE CUMMINS HOSE?
Yes — CPP Diesel sells only authentic Cummins OEM components for proper fitment and reliability.
