Engine Coolant Thermostat O-Ring for 2005-2006 Toyota Corolla & More - Fel-Pro 35717

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$3.99
MPN: 35717
UPC: 614046739277
Item Package Quantity: 1
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FEL-PRO Multi Purpose O-Ring P/N:35717
FEL-PRO Multi Purpose O-Ring P/N:35717
$3.99

Keep engine coolant sealed at the thermostat housing joint with the FEL-PRO Engine Coolant Thermostat Housing Seal / Multi-Purpose O-Ring 35717. It installs as a direct-fit replacement on many vehicles, among them the 2005-2006 Toyota Corolla 1.8L, 2000-2004 Ford Focus 2.0L and 2003-2006 Toyota Matrix 1.8L — see the Buyer's Guide tab for the full list of applications. This part is cataloged under both names.

  • Application-specific design: shaped for a precise fit on the exact vehicles it is cataloged for.
  • Repair-ready sealing: designed for the real-world repair environment and imperfect sealing surfaces to deliver a reliable seal even on troublesome applications.
  • Proprietary materials: made with Fel-Pro's proprietary materials for professional-grade sealing.
  • Precision engineering: engineered to exacting standards and built to OE-level sealing performance.

As an O-ring seal, it fills the joint at the thermostat housing to help keep engine coolant from seeping past the connection. If coolant weeping or a leak at the housing is traced to a hardened or damaged seal, this replaces it; the listed applications each use one. Country of origin: Vietnam.

Interchange: A27996 · 123601 · W702259S300 · 88969595 · 8920203 · K31714 · K31792 · WP9726 · 9030169007 · 411028500

This part cross-references / interchanges with the following part numbers:

A27996, 123601, W702259S300, 88969595, 8920203, K31714, K31792, WP9726, 9030169007, 411028500

Frequently Asked Questions

What is FEL-PRO 35717?

It is a multi-purpose O-ring cataloged as an engine coolant thermostat housing seal (MPN 35717). It seals the coolant joint at the thermostat housing and is listed under both names.

What vehicles does it fit?

It fits many vehicles, among them the 2005-2006 Toyota Corolla 1.8L, 2000-2004 Ford Focus 2.0L and 2003-2006 Toyota Matrix 1.8L. See the Buyer's Guide tab for the full list.

How many do I need?

This listing is for one O-ring, and each of the listed applications uses one.

What are the signs this seal may need replacing?

Coolant seepage, drips or a leak at the thermostat housing connection can be signs the O-ring has hardened or failed. Diagnose the cause before replacing.

What does "application-specific" mean here?

Fel-Pro designs the seal for the exact listed vehicles and for imperfect real-world sealing surfaces, built to OE-level sealing standards for a precise fit.