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This self-draining oil catch can is for 2003–2025 Ram 5.9L and 6.7L diesel owners using aftermarket valve covers who want to trap blow-by oil, keep the intake cleaner, and avoid frequent manual draining.

Dodge Ram 5.9L & 6.7L Diesel Oil Catch Can Overview

Keep your intake system clean and your engine running at peak performance with this high-efficiency oil catch can, precision-engineered for Dodge Ram 5.9L and 6.7L diesel engines. Designed for use with aftermarket valve covers, this catch can connects to the Crankcase Ventilation (CCV) system to capture oil vapor and blow-by, preventing oil residue from entering the intake manifold. Ideal for modified or performance-tuned trucks, this unit offers a low-maintenance, high-capacity solution thanks to its direct-drain integration and washable filter.

Fitment

- 2003–2007 Dodge Ram 5.9L Diesel
- 2007.5–2025 Dodge Ram 6.7L Diesel
- Not compatible with trucks equipped with dual alternators

Key Features That Keep Your Intake Cleaner

- Self-Draining Design: Utilizes the OEM side port on the engine block for direct oil drainage—no need to manually empty the can frequently.
- High-Efficiency Separation: Features internal baffles and a washable top filter to maximize oil-vapor separation and reduce intake contamination.
- Engine Protection: Prevents oil vapors from reaching the intake system, reducing carbon buildup and improving engine longevity.
- Billet Aluminum Construction: CNC-machined for precision and durability, enhancing both function and engine bay appearance.
- Wide Compatibility: Fits Dodge Ram 5.9L & 6.7L diesel engines and is fully compatible with SPELAB aftermarket valve covers.
- Color Options: Available in both red and black anodized finishes to match your engine build aesthetic.

Efficient Oil-Vapor Separation for Diesel Crankcase Ventilation

How it works:

- Crankcase gases enter through the dual inlets on the left side.
- Inside, an internal baffle wall splits the can into two chambers.
- Oil vapor hits a stainless steel and condenses.
- Oil collects at the bottom and drains cleanly via the outlet.
- Filtered air exits through the top-mounted outlet on the right side, minimizing mess and emissions.

This design prevents oily residue under the truck and eliminates the risk of oil being pulled into the exhaust during heavy loads. With a sealed and serviceable structure, it ensures easy maintenance and clean operation—perfect for drivers who demand both performance and practicality.

Installation Guide

SPELAB Oil Catch Can

Recommended Installation Guide: Valve Cover & Oil Catch Can

Valve Cover Connection

The SPELAB 2006-2024 Dodge Ram Valve Cover is designed with two ports to facilitate proper crankcase gas management. For integration with the oil catch can system:

One Port: Connect this port directly to the SPELAB Oil Catch Can using appropriate hosing and clamps.
Remaining Port: The second port on the valve cover should be securely plugged to prevent any unintended air or oil passage.

Oil Catch Can Connection

The SPELAB Oil Catch Can effectively separates oil vapor from crankcase gases, promoting a cleaner intake system. To correctly integrate it:

Inlet Port: Connect one of the oil catch can's ports to the designated port on the SPELAB Valve Cover.
Drain Port: The other port on the oil catch can should be connected to a hose that is routed downwards, allowing for proper drainage of collected oil away from the engine compartment, typically towards the underside of the vehicle.

Following these steps will help maintain engine cleanliness and performance by managing crankcase blow-by effectively.

Specifications

Material	Billet Aluminum
Weight	2.36 kg (5.2 lbs)
Package Dimensions	26 × 26 × 12 cm (10.2" × 10.2" × 4.7")
Color Options	Red / Black
Installation Location	Connects to the valve cover and routes through the engine’s crankcase ventilation (CCV) system

Application – Usage Scenarios & System Integration

- Aftermarket Valve Cover
  Crankcase pressure increases after tuning or under high load, often pushing oil vapor directly into the intake. Paired with a valve cover, this catch can routes and traps the oil mist before it enters the turbo inlet, reducing carbon buildup and oil film in intake pipes.
- CCV System
  Stock CCV setups often allow oil vapor to enter the intake tract. This catch can acts as an additional filter, improving separation efficiency and reducing maintenance on sensors, filters, and intercoolers.
- EGR Delete Kit
  Without EGR, the intake airflow increases, but residual oil vapor can still coat the manifold. The catch can stops this at the source, preserving clean air channels and ensuring smoother throttle response.
- Cold Air Intake / High-Flow Filters
  Oil mist reaching aftermarket filters can clog filter elements and affect air metering. The catch can keeps the intake charge clean, maintaining airflow accuracy and filter life.
- Turbocharger & Intercooler System
  Oil pooling in the intercooler can lead to heat soak and reduced boost efficiency. By intercepting oil vapor early, this unit keeps the charge air cooler and the system more responsive under boost.
- High-Mileage / Towing Applications
  Engines under load or with wear produce more blow-by. The catch can reduces oil fouling in the intake, lowering the risk of detonation, misfire, or reduced fuel efficiency during heavy use.

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Oil Catch Can FAQs

Q: What does this oil catch can do?
A: It captures oil vapors and blow-by gases from the CCV system to prevent oil from entering the intake system, maintaining cleaner airflow and reducing carbon deposits.

Q: Is this compatible with stock valve covers?
A: It is designed to work with aftermarket valve covers, particularly SPELAB models.

Q: Do I need to manually drain it?
A: No. This catch can connects to the OEM drain port, allowing oil to flow back to the engine—no frequent emptying required.

Q: What is it made of?
A: It is CNC-machined from billet aluminum, offering excellent strength, heat resistance, and a premium appearance.

Q: Will it fit my Dodge Ram 6.7L diesel with dual alternators?
A: No, this product is not compatible with dual alternator setups.

Q: Is the filter washable?
A: Yes, the top-mounted filter is washable and reusable.

Q: Can it help my tuned Dodge Ram diesel engine?
A: Absolutely. Tuned or modified engines typically produce more blow-by, and this catch can helps maintain intake system cleanliness and engine performance.

Q: Will this help reduce oil consumption?
A: It won’t reduce oil consumption directly, but it prevents oil mist from recirculating, which improves engine efficiency and reduces gunk buildup.

Q: Does it improve engine bay aesthetics?
A: Yes, the billet aluminum body adds a clean, professional look under the hood.

Best For

Ram 5.9L and 6.7L Diesel Owners: Fits 2003–2007 5.9L and 2007.5–2025 6.7L diesel trucks equipped with a compatible aftermarket valve cover.
Tuned and High-Load Trucks: A practical upgrade for engines producing more blow-by during towing, performance tuning, or sustained heavy-duty use.
Owners Fighting Intake Oil Buildup: Helps capture oil vapor before it coats the turbo inlet, intake piping, intercooler, sensors, and intake manifold.
Drivers Wanting Less Maintenance: The self-draining design returns collected oil through the OEM engine-block port, reducing the need to empty the catch can manually.
Aftermarket Valve Cover Builds: Designed to integrate with compatible valve covers, especially SPELAB valve cover setups with dedicated crankcase ventilation ports.
Owners Wanting a Cleaner Engine Bay: Billet aluminum construction and red or black finishes provide a durable, professional-looking installation.

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Fast Shipping Policy

Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date. Click for Shipping Policy

Easy Return Policy

Every order comes with a 14-day free return, which means you don't have to pay for a return slip. Click for Return Policy

SPELAB Oil Catch Can with Breather Filter 300ml Universal Aluminum

Oil Catch Can for Dodge Ram 5.9L & 6.7L Diesel | SPELAB