SPOOLOGIC Turbo Pedestal Yellow O-Rings

The SPOOLOGIC SL-310-001 Turbo Pedestal Yellow O-Ring Set replaces the upper and lower turbo pedestal oil seals on 1994–2003 Ford 7.3L Powerstroke applications. This four-piece set includes two large and two small yellow Viton O-rings to seal the oil passages at the turbocharger-to-pedestal and pedestal-to-engine connections. Use fresh seals when replacing the turbocharger, removing the pedestal, or repairing a confirmed pedestal O-ring oil leak.

Features

• Four-piece set for the upper and lower pedestal connections
• Two large and two small yellow Viton O-rings
• Oil-resistant Viton construction for engine oil sealing applications
• Seals the turbocharger oil supply and drain passages
• Replaces the original O-rings without modifying the sealing connections

Turbo Pedestal Oil Sealing

The turbo pedestal supports the turbocharger and carries engine oil to and from its center housing. One large and one small O-ring seal the connection between the engine and pedestal, while a second pair seals the connection between the pedestal and turbocharger. Replacing all four addresses both mounting surfaces when the turbocharger and pedestal are removed.

Heat cycles and age can leave the original O-rings hardened, flattened, or damaged. Oil escaping from these connections can collect in the engine valley and travel down the rear of the engine. Inspect the leak source before replacing parts, since oil in this area can also come from other engine components.

What's Included

• 2 Large Yellow Viton Turbo Pedestal O-Rings
• 2 Small Yellow Viton Turbo Pedestal O-Rings

Fitment

• 1994–1997 Ford F-250 F-350 OBS 7.3L Powerstroke
• Early 1999 Ford F-250 F-350 F-450 F-550 Super Duty 7.3L Powerstroke
• Late 1999–2003 Ford F-250 F-350 F-450 F-550 Super Duty 7.3L Powerstroke
• 2000–2003 Ford Excursion 7.3L Powerstroke
• 1995–2003 Ford E-Series Econoline 7.3L Powerstroke

Common Turbo Pedestal O-Ring Leak Symptoms

• Fresh engine oil around the pedestal base or beneath the turbocharger
• Oil collecting in the engine valley near the pedestal
• Oil running down the rear of the engine or onto the transmission bellhousing
• Hardened, flattened, or cut O-rings found during turbocharger removal

Oil at the bellhousing does not automatically indicate a rear main seal leak. Clean the affected area and trace fresh oil to its source. This set replaces the four external mounting O-rings; it does not include the internal exhaust backpressure valve actuator seals or turbocharger rebuild seals.

Installation Notes

• Access: Remove the turbocharger and pedestal as required to reach both pairs of O-rings.
• Preparation: Clean the sealing grooves and mating surfaces. Keep debris out of the oil passages.
• Placement: Install one large and one small O-ring at each connection, matching the original locations.
• Lubrication: Lightly coat the new O-rings with clean engine oil before assembly.
• Assembly: Keep each seal seated while positioning the pedestal and turbocharger. Avoid pinching or twisting the O-rings.
• Final tightening: Follow the service procedure and torque specifications for the application.
• Leak check: Check the engine oil level, start the engine, and inspect both connections for fresh oil.

Related Turbo Seals

The compressor outlet uses a separate seal. For the matching application, see the SPOOLOGIC Turbo-to-Spyder O-Ring — SL-310-002 for 1994–1997 OBS and Early 1999 configurations, or Turbo-to-Spyder O-Ring — SL-310-003 for Late 1999–2003 configurations.

OEM Cross-References

• Ford: F4TZ-6N653-A / F4TZ6N653A
• Ford: F4TZ-6N653-B / F4TZ6N653B

1-Year Limited Warranty

This SPOOLOGIC O-ring set carries a one-year limited warranty against defects in materials and workmanship from the original purchase date. Contact SPOOLOGIC for return authorization before sending the product for inspection. Approved defective seals will be replaced at SPOOLOGIC’s discretion. The customer is responsible for all warranty shipping charges. Damage from improper installation, incorrect application, contamination, or normal wear is not covered. Labor, removal, reinstallation, towing, and downtime are excluded, subject to applicable law. See the SPOOLOGIC Warranty Policy for complete terms.