O-Ring 15.4×1.8 mm (Part 806915170)

Ensure leak-proof performance in your Subaru’s fluid circuits with the genuine O-ring (part 806915170). Molded to exact factory tolerances, this metric seal maintains consistent compression between mating surfaces to prevent oil, coolant or hydraulic fluid seepage.

Key Benefits

• Exact OEM Fit
  Manufactured to Subaru’s precise 15.4 × 1.8 mm specification for seamless drop-in replacement—no resizing or modification required.

• Premium Nitrile Rubber
  Automotive-grade NBR compound resists oil, coolant and fuel exposure, as well as temperature extremes from –40 °C to +120 °C.

• Leak-Proof Sealing
  Uniform cross-section and smooth surface finish deliver even compression and a reliable barrier against fluid loss.

• Versatile Application
  Ideal for sealing coolant housings, fuel fittings, transmission plugs, brake or clutch lines and other critical junctions.

• Long-Life Durability
  Resistant to hardening, cracking and extrusion under pressure, ensuring extended service intervals and reduced maintenance.

Technical Specifications

• Part Number: 806915170

• Cross-Section: 1.8 mm

• Inner Diameter: 15.4 mm

• Material: Nitrile rubber (NBR)

• Temperature Range: –40 °C … +120 °C

• Chemical Compatibility: Engine oil, coolant, fuel, hydraulic fluid

• Quantity: Sold individually; replace all old O-rings in the assembly for best results

Installation Overview

1. Clean Mating Surfaces: Remove debris, old sealant and corrosion to ensure a smooth mating face.

2. Lubricate O-Ring: Lightly coat the seal with compatible fluid (oil or coolant) to aid installation and prevent pinching.

3. Position Seal: Seat the O-ring evenly in its groove or bore, avoiding twists.

4. Assemble Components: Bring mating parts together gently, ensuring the O-ring remains centered and unpinched.

5. Torque Fasteners: Tighten bolts or fittings to manufacturer specifications to achieve uniform compression and leak-free operation.