2001-2016 Duramax 6.6L Exhaust Manifold and Upper Intake Kit Instructions

Product Name and Model

High-Flow Exhaust Manifolds and Up-Pipes Kit For 2001-2016 6.6L GM Duramax

Product Features and Benefits

• Increased exhaust flow, reduced backpressure, and improved turbocharger response.

• Manufactured with high-performance materials for durability and long-term reliability.

• Compatible with Duramax LB7, LLY, LBZ, LMM, and LML engines.

• Precision manufacturing for increased overall exhaust system efficiency.

• Lower exhaust temperatures and extended engine life.

Key Features

• Optimized flow design reduces airflow resistance and increases power output.

• High-strength stainless steel construction for high-temperature and corrosion resistance, suitable for harsh environments.

• Compatible with SPELAB 3-inch 304 stainless steel Down-Pipe (optional upgrade).

• Professionally designed gaskets ensure a tight seal and prevent exhaust leaks.

Technical Specifications

• Material: High-temperature resistant stainless steel

• Compatible Vehicles: 2001-2016 6.6L Duramax

• Weight: Varies depending on the model

• Compatible Engines: LB7, LLY, LBZ, LMM, LML

• Product Includes:

  • Left and right exhaust manifolds

  • High-flow Up-Pipe

  • Gaskets and bolts required for installation

  • Lock nuts

  • Connecting brackets

Installation and Usage Instructions

Installation Steps

Preparation

1. Disconnect the negative battery terminal.

2. Remove the right front tire.

3. Remove the inner fender liner using a flat-head screwdriver or a specialized tool.

4. Loosen the transmission oil dipstick tube.

5. Remove the right-side exhaust pipe.

6. Remove the exhaust manifold heat shield.

7. If an EGT sensor is installed, remove the probe.

8. Remove the right-side Up-Pipe.

9. Remove the right-side exhaust manifold and replace it with a new exhaust manifold and gasket.

10. Remove the left front tire.

11. Remove the left inner fender liner.

12. Remove the left-side Up-Pipe.

13. Rotate the steering shaft so the bolts are in the up and down position, then remove the steering shaft bolts.

14. Remove the left-side exhaust manifold heat shield.

15. Remove the left-side exhaust manifold.

16. Install the left-side Up-Pipe first, then install the exhaust manifold.

17. Connect the left-side Up-Pipe to the turbo, but do not tighten the bolts yet.

18. Install the left-side exhaust manifold using a new gasket and tighten to 42 ft.lbs of torque.

19. Connect the Up-Pipe to the exhaust manifold and tighten to 39 ft.lbs of torque.

20. Reinstall the steering shaft bolts.

21. Wrap the steering pressure pipe with heat wrap material and secure with wire.

22. Reinstall the left inner fender liner.

23. Install the left front tire.

24. Install the right-side Up-Pipe, but do not tighten the bolts yet.

25. Ensure the engine oil dipstick tube is properly positioned.

26. Connect the right-side exhaust manifold and tighten to 42 ft.lbs of torque.

27. If applicable, reinstall the EGT probe.

28. Install a new gasket and connect the Up-Pipe to the exhaust manifold.

29. Tighten the Up-Pipe bolts connected to the turbo and exhaust manifold in sequence (39 ft.lbs).

30. Re-secure the transmission oil dipstick tube.

31. Reinstall the right inner fender liner.

32. Reinstall the right front tire.

33. Reconnect the negative battery terminal.

Precautions

• Ensure all gaskets are installed correctly to prevent exhaust leaks.

• Use high-temperature lubricant to prevent bolts from rusting or seizing.

• Avoid installation when the vehicle is hot to prevent burns.

• Check all fasteners to ensure they are secure.

• Regularly inspect the exhaust system to maintain good operating condition.

Troubleshooting

Accessories and Consumables

Standard Configuration:

• Left and right exhaust manifolds

• Up-Pipe (with gaskets and mounting bolts)

• Connecting brackets and installation accessories

Optional Upgrades:

• SPELAB 3-inch 304 stainless steel Down-Pipe

• SPELAB titanium heat wrap to improve heat resistance

Warranty Policy

Limited Warranty:

• This product comes with a one-year limited warranty from the date of purchase.

• The warranty covers defects in materials or workmanship.

The warranty does not cover:

• Damage caused by improper installation, misuse, collision, or modification.

• Damage caused by normal wear and tear or environmental factors.

How to Apply for Warranty:

1. The purchaser must provide valid proof of purchase.

2. The defective part must be returned to SPELAB for inspection.

3. The warranty service does not include labor costs for installation or removal.

Conclusion

After installation, enjoy a higher-performance exhaust system and stronger power performance!

FAQ

Q1: Does this kit require any modifications to install?
A1: No, this kit is designed as a direct bolt-on replacement. However, minor adjustments may be needed depending on your specific Duramax model.

Q2: What material are the gaskets made from?
A2: The gaskets included in the kit are made from high-temperature resistant stainless steel and graphite composite to ensure a tight seal and long-lasting durability.

Q3: Will this kit affect fuel economy?
A3: Yes, in most cases, you may see a slight improvement in fuel efficiency due to reduced backpressure and improved exhaust flow. However, actual results depend on driving habits and other modifications.

Q4: Can this kit be used with aftermarket turbochargers?
A4: Yes, this kit is compatible with most aftermarket turbochargers designed for the 6.6L Duramax engine. However, it's recommended to verify fitment before purchasing.

Q5: What should I do if I encounter fitment issues during installation?
A5: If you experience fitment issues, double-check that you have the correct kit for your Duramax model and year. Ensure all mounting surfaces are clean and free of debris. If problems persist, contact technical support for troubleshooting assistance or installation tips.