Tombstone Diesel Turbo Drain Line Kit w/ AN Fittings + AN Drain Lock (Cummins 1994–2024)
Upgrade your turbo drain system the right way. This kit replaces the factory corrugated drain tube with a leak-resistant, AN-style braided line and includes our AN Drain Lock to positively retain the block fitting under boost or crankcase pressure. Works with single or compound setups and factory VGT or fixed-vane chargers.
Why Replace the Factory Drain?
On 1994–2024 Dodge Ram Cummins trucks, the OEM corrugated drain tube is easily deformed, prone to leaks, and offers no secure retention into the block. Heat, vibration, and boost can cause the drain to back out or weep. Our kit eliminates those weak points with a serviceable high-temp AN braided line, precision fittings, and a block-secure AN Drain Lock.
Designed for Real-World Builds
- Compatible with single, compound, and second-gen swap configurations
- Fits factory VGT, fixed-vane, and popular S300 / S400 chargers
- Includes extra hose length so you can route and cut to a perfect fit
- DIY-friendly with simple tools and clear marking/cutting instructions
What’s Included
- High-temperature braided -10 AN drain line (cut-to-fit)
- (2) 45° -10 AN fittings for optimal routing and clearance
- Turbo-side drain adapter for S300 / S400 / Factory turbos
- Engine block AN drain adapter
- Tombstone Diesel AN Drain Lock Kit (Red or Black) with hardware
- Step-by-step install guide (with measuring/marking & cutting tips)
Why This Kit Is Better
| Feature | OEM Corrugated Tube | Tombstone AN Drain Kit |
|---|---|---|
| Block Retention | Loose friction fit | Positive-lock AN Drain Lock |
| Leak Resistance | Prone to deformation & seepage | AN-style, serviceable, high-temp hose |
| Serviceability | Limited / disposable | Rebuildable with standard tools |
| Fitment Flexibility | Limited routing options | (2) 45° fittings prevent manifold & oil filter interference |
Installation
DIY-friendly—no specialty AN tools required:
- Hose cutters, tape measure/marker
- Assembly lube
- Standard or AN wrench (protective jaw covers recommended)
Follow the guide to mark angles, avoid sharp bends, and confirm clearances around the manifold and oil filter housing.
Fitment
- Vehicle: Dodge Ram 2500 / 3500 (Cummins 5.9L & 6.7L)
- Years: 1994–2024
- Turbos: Factory VGT, fixed-vane, S300, S400 (single or compound)
- Configurations: Stock location, second-gen swap, compounds
No More Leaks Lock-In Block Security Do It Once. Do It Right.
Choose your Drain Lock color during checkout: Red or Black.
Return Policy
Please note that we are not responsible for any installation errors. Products that have been used, installed, or partially installed are not eligible for return. All returns must be in new, unused condition and include original packaging.
Made in USA
94-24 Cummins
Cross Compatible
| Make |
| Model XS |
| Engine XS |
| Year XS |
| Size XS |
| Make | DODGE | RAM |
|---|---|
| Model | 2500 | 3500 |
| Engine | CUMMINS 5.9L | 6.7L |
| Year | 1994-2024 |
| Size | -10 | -12 |
