Product Description
CUMMINS 3900919 OEM CONNECTING ROD CAP SCREW (ROD BOLT) – RAM 5.9L (1989–2002)
When you’re rebuilding or freshening up a 5.9L Cummins, the Cummins 3900919 OEM connecting rod cap screw (rod bolt) is the hardware you don’t cheap out on. These torque-to-yield fasteners are what keep the rod caps clamped to the crank at high cylinder pressure, so replacing stretched or reused bolts with genuine Cummins hardware is a must for reliability in your 1989–2002 Dodge/Ram 5.9L truck or B-Series industrial application.
Key Features & Benefits
- Genuine Cummins 3900919 connecting rod cap screw – not a generic aftermarket bolt.
- Correct torque-to-yield design for 1989–2002 5.9L Cummins (12V and 24V) automotive applications.
- Engineered clamping force to keep rod caps secure under stock or tuned power levels.
- Sold individually – 12 bolts required per inline-six engine (2 per connecting rod).
- Also widely used across Cummins B-Series 3.9L / 5.9L (4B/6B, 4BT/6BT, ISB/QSB) industrial applications – verify by ESN.
Fitment Details
Automotive Fitment – Dodge/Ram Trucks
- 1989–2002 Dodge/Ram 2500 5.9L Cummins (12V & 24V)
- 1989–2002 Dodge/Ram 3500 5.9L Cummins (12V & 24V)
Engine Platform
- Cummins B-Series 5.9L (6BT, ISB 5.9L) – automotive 1st & 2nd Gen Ram 2500/3500
- Commonly used across Cummins B-Series engines (4BT/6BT, ISB/QSB) in off-highway/industrial – always confirm by ESN before ordering.
For industrial, agricultural, and generator sets, match by engine serial number (ESN) and existing hardware to confirm 3900919 is correct for your build.
Cross-Reference Cummins Components (Internal Links – Cummins Only)
Pair this genuine Cummins rod bolt with OEM bearings and bushings to keep your bottom end 100% Cummins:
- CUMMINS 4892714 OEM CONNECTING ROD BEARING (STD) – RAM 5.9L (1989–2002) – standard-size rod bearing shell for stock crank journals.
- CUMMINS 4932378 OEM CONNECTING ROD BEARING (.040 UNDERSIZE / 1.00 MM) – RAM 5.9L (1989–2002) – .040" / 1.00 mm undersize rod bearing for ground crankshafts.
- CUMMINS 4891179 OEM CONNECTING ROD CAP SCREW (ROD BOLT) – ISB 5.9L/6.7L (2003–2018) – later-generation ISB/6.7L rod bolt (not for 1989–2002, but ideal when you’re working on 03+ trucks).
- CUMMINS 4891178 OEM CONNECTING ROD WRIST PIN BUSHING – RAM 5.9L (1989–2007) – genuine Cummins small-end bushing for 5.9L rods.
What’s Included
- (1) Genuine Cummins connecting rod cap screw / rod bolt – part number 3900919
Install Notes
- Torque-to-yield design: these bolts are one-time-use. Do not reuse removed rod bolts.
- Follow the correct Cummins service manual torque + angle procedure and lubrication spec.
- Keep each rod and cap matched and oriented correctly; verify bearing clearances and bolt stretch where applicable.
- Always confirm part number 3900919 against your VIN/ESN, especially for industrial or non-Ram applications.
Specifications for cummins 3900919
| Brand | Cummins (Genuine OEM) |
|---|---|
| Part Number | 3900919 |
| Description | Connecting rod cap screw / rod bolt |
| Engine Compatibility | Cummins B-Series 5.9L (6BT / ISB), common on 4BT/6BT and ISB/QSB variants; automotive fitment: 1989–2002 Dodge/Ram 2500/3500 5.9L Cummins (12V & 24V). |
| UPC | 607604755680 |
| GTIN | 607604755680 |
| Quantity Required | 12 per inline-six engine (2 per connecting rod) |
| Shipping Weight | Approx. 0.12 lb each (reference OEM shipping weight ~0.119 lb) |
| Package Dimensions | Approx. 3.00" W × 5.00" H × 5.00" D (shipping carton) |
| Shipping Method | Standard ground; ships from CPP Diesel – shipping calculated at checkout |
| Cross Reference | Cummins 3970502; Cummins 3900677; FP Diesel FPDFP-3900919; Interstate-McBee M-3900919; PAI 040035 (verify against ESN before substituting). |
| E-Codes | N/A – hardware fastener (no emissions-related E-code) |
| Prop 65 | Yes – Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
FAQ
The 5.9L inline-six uses 12 connecting rod bolts total (2 per connecting rod). This part is sold individually, so order 12 pieces for a complete set on one engine.
ARE THESE TORQUE-TO-YIELD (ONE-TIME-USE) ROD BOLTS?
Yes. The factory Cummins 3900919 rod bolts are torque-to-yield and are designed for one-time use only. Any rod bolt that has been stretched during tightening should be replaced rather than reused.
WILL CUMMINS 3900919 FIT MY 1989–2002 DODGE/RAM 5.9L CUMMINS?
For Dodge/Ram applications, 3900919 is a direct-fit connecting rod cap screw for 1989–2002 Ram 2500/3500 5.9L Cummins (12V & 24V). We still recommend verifying by VIN or engine serial number (ESN) for mixed or swapped engines.
CAN I USE THIS BOLT ON OTHER CUMMINS B-SERIES ENGINES?
This design is commonly used on Cummins B-Series 3.9L/5.9L (4BT/6BT, ISB/QSB) engines in truck, industrial, and off-highway equipment. Because there are multiple rod and bolt combinations, always confirm the correct part by ESN and existing hardware before ordering.
WHAT OTHER CUMMINS PARTS SHOULD I REPLACE WHEN DOING RODS AND BEARINGS?
At minimum, we recommend replacing rod bearings and inspecting the wrist pin bushings. CPP Diesel stocks genuine Cummins options like 4892714 STD rod bearings, undersize bearings such as 4932378 (.040"/1.00 mm), and 4891178 wrist pin bushings to keep your bottom end all-Cummins.
IS THIS A GENUINE CUMMINS PART OR AFTERMARKET?
This listing is for a genuine Cummins 3900919 connecting rod cap screw sourced through CPP Diesel. If you are comparing to aftermarket or “will-fit” hardware, check the torque specs, material, and warranty – OE Cummins bolts are engineered specifically for these engines.
Helpful Notes
- Mixing different rod bolt designs or brands on the same engine is not recommended – keep all 6 rods on the same hardware.
- Always inspect rods, caps, and parting lines for fretting or distortion before reassembly.
- If in doubt, contact CPP Diesel with your engine serial number for confirmation before ordering.
