1. Introduction
The Dorman 667-500 Turbocharger Mounting Gasket is a direct replacement component designed to ensure a secure and leak-free seal between the turbocharger and the exhaust manifold or cylinder head in compatible Dodge/Ram models. This gasket is crucial for maintaining proper turbocharger function and preventing exhaust gas leaks that can lead to reduced engine performance and efficiency.
Manufactured from durable materials, this gasket is engineered for reliable performance and a long service life, restoring the functionality of your vehicle's turbocharger system.
Image 1.1: The Dorman 667-500 Turbocharger Mounting Gasket, a direct replacement part.
2. Installation
Proper installation of the turbocharger mounting gasket is critical for its performance and longevity. It is highly recommended that installation be performed by a qualified automotive technician using appropriate tools and following vehicle-specific service manual procedures.
2.1 Pre-Installation Checks
- Vehicle Compatibility: Confirm that the Dorman 667-500 gasket is compatible with your specific vehicle make, model, and year using the vehicle's service manual or a reliable parts catalog.
- Inspect Mating Surfaces: Thoroughly clean and inspect the mating surfaces on both the turbocharger and the exhaust manifold/cylinder head. Ensure they are free of old gasket material, carbon deposits, rust, or any imperfections that could compromise the seal. A clean, flat surface is essential.
- Hardware Inspection: Inspect all bolts, studs, and nuts for damage, corrosion, or stretching. Replace any compromised hardware to ensure proper torque and clamping force.
- Related Components: Consider inspecting or replacing other related components such as turbocharger oil lines, coolant lines, and clamps, as these are often disturbed during gasket replacement.
Image 2.1: A turbocharger assembly, illustrating the component where the gasket will be installed.
2.2 Installation Steps (General Guidelines)
- Disconnect Battery: For safety, disconnect the vehicle's battery before beginning any work.
- Access Turbocharger: Carefully remove any components obstructing access to the turbocharger and its mounting points. This may include air intake pipes, heat shields, and exhaust components.
- Remove Old Gasket: Loosen and remove the bolts securing the turbocharger. Carefully separate the turbocharger from the manifold/cylinder head and remove the old gasket.
- Clean Surfaces: Re-clean both mating surfaces thoroughly to remove any remaining debris or old gasket material. Use a suitable gasket scraper and cleaner, ensuring no foreign material enters the turbocharger or exhaust system.
- Position New Gasket: Carefully place the new Dorman 667-500 gasket onto the appropriate studs or alignment pins, ensuring correct orientation.
- Reinstall Turbocharger: Carefully align and reattach the turbocharger to the manifold/cylinder head. Insert and hand-tighten the mounting bolts.
- Torque Bolts: Using a torque wrench, tighten the mounting bolts to the vehicle manufacturer's specified torque settings. Follow the recommended tightening sequence (e.g., crisscross pattern) to ensure even clamping pressure. Refer to your vehicle's service manual for exact torque specifications.
- Reassemble Components: Reinstall all previously removed components, ensuring all connections are secure and hoses/pipes are properly routed.
- Reconnect Battery: Reconnect the vehicle's battery.
- Test for Leaks: After installation, start the engine and carefully check for any exhaust gas leaks around the turbocharger mounting area. Listen for hissing sounds and visually inspect for smoke.
Note: This is a general guide. Always consult your vehicle's specific service manual for detailed, accurate, and safe installation procedures, including torque specifications and component removal/installation sequences.
3. Operation
The Dorman 667-500 Turbocharger Mounting Gasket is a passive component that functions by creating a tight seal between the turbocharger and its mating surface. Once correctly installed, it ensures that exhaust gases are efficiently directed through the turbocharger, preventing leaks that could reduce turbocharger efficiency and engine performance. Its operation is continuous as long as the engine is running and the turbocharger is active.
4. Maintenance
Turbocharger mounting gaskets are generally considered maintenance-free components once installed correctly. They are designed for long-term sealing. However, their condition can be indirectly monitored during other routine vehicle maintenance or when inspecting the turbocharger or exhaust system.
4.1 Inspection
- During any work on the turbocharger or exhaust manifold, visually inspect the gasket area for signs of exhaust leaks (soot marks, discoloration) or physical damage to the gasket itself.
- Listen for unusual hissing or blowing sounds from the turbocharger area, which could indicate a compromised seal.
If a leak is detected or the gasket shows signs of degradation, it should be replaced immediately to prevent further damage to the turbocharger or engine components.
5. Troubleshooting
Issues related to the turbocharger mounting gasket typically manifest as exhaust leaks. If you suspect a problem with the gasket, consider the following:
| Symptom | Possible Cause | Solution |
|---|---|---|
| Hissing or blowing sound from engine bay, especially under acceleration. | Exhaust leak from a failed or improperly installed gasket. | Inspect gasket area for leaks. If confirmed, replace the gasket, ensuring proper surface preparation and torque specifications are met. |
| Soot marks or discoloration around the turbocharger mounting flange. | Evidence of exhaust gas escaping past the gasket. | Replace the gasket. Clean all soot from surrounding components. |
| Reduced engine power or increased turbo lag. | Significant exhaust leak preventing proper turbocharger spooling. | Diagnose and repair exhaust leak. This may involve replacing the gasket. Consult a professional if other turbocharger issues are suspected. |
| Check Engine Light (CEL) with related diagnostic trouble codes (DTCs). | Severe exhaust leaks can affect oxygen sensor readings, leading to fuel trim issues or other engine management problems. | Scan for DTCs. Address the underlying exhaust leak by replacing the gasket and clearing codes. |
If troubleshooting steps do not resolve the issue, or if you are unsure about the diagnosis, it is recommended to consult a certified automotive technician.
6. Specifications
| Attribute | Value |
|---|---|
| Brand | Dorman |
| Model Number | 667-500 |
| Item Weight | 0.8 ounces |
| Product Dimensions | 0.2 x 4.7 x 3.5 inches |
| Manufacturer Part Number | 667-500 |
| OEM Part Number | 61765; 68005334AB |
| UPC | 889245621887 |
| What's in the Box | 1 Turbo Gasket |
7. Warranty and Support
Dorman products are known for their quality and reliability. For specific warranty information regarding the Dorman 667-500 Turbocharger Mounting Gasket, please refer to the official Dorman website or contact Dorman customer support directly. Warranty terms typically cover defects in material and workmanship.
For technical assistance, installation questions, or warranty claims, please contact Dorman customer service:
- Dorman Official Website: www.dormanproducts.com
- Customer Support: Refer to the contact section on the Dorman website for phone numbers or email support.
When contacting support, please have your product model number (667-500) and any relevant purchase information readily available.