Click&Fit Coolant Reservoir Cap for Subaru Forester Impreza WRX 45153AA000 | Fits Crosstrek BRZ Baja Tribeca. For Toyota 86 GR86. For Scion FR-S. Coolant Tank Cap, replaces 45153-AA010

Coolant expansion tank cap, aftermarket replacement. This is an aftermarket part that replaces OEM numbers: 45153-AA000, 45153-AA010, 45642-KG000, SU003-01187, 16471-23030. This is an aftermarket replacement, not a genuine part. It is a two-way pressure and vacuum cap that seats on the coolant bottle at the highest point of the cooling circuit and is not interchangeable with the one-way radiator cap. Compatible with Subaru Models: Baja 2003-2006 BRZ 2013-2025 Crosstrek 2013-2025 Exiga 2008-2018 Forester 1998-2025 Impreza 1993-2025 Legacy 1990-2004 Levorg 2015-2025 Outback 1996-2004 R1 2005-2010 R2 2003-2010 Stella 2006-2011 Tribeca 2006-2014 WRX 2002-2026 WRX STI 2004-2021 Compatible with Toyota Models: 86 2017-2020 GR86 2022-2025 Compatible with Scion Models: FR-S 2013-2016 May Also Fit (Verify Before Ordering): The following vehicle shares the same platform and cooling system and likely accepts this part. Compare your existing part side-by-side or check by VIN before purchasing. May also fit Saab: 9-2X 2005-2006 - GG-platform Impreza WRX twin Installation Note for Subaru diesel models: Physically threads onto Forester 2009-2013, Legacy 2008-2014, and Outback 2008-2014 fitted with the EE20 boxer diesel, but the overflow nipple sits at a different angle, so the overflow hose must be re-routed. The diesel-specific cap 45153-AA001 is the correct part for these engines. Product Details: Two-way pressure and vacuum valve rated 88-108 kPa (12.8-15.7 psi), set lower than the radiator cap so the expansion tank vents first. Plastic body with integral sealing gaskets and a twist-lock fit onto the tank neck. Covers petrol engine families including EJ, EL, EN, EZ, FA, and FB. When to Replace: Replace when you see coolant seepage around the cap, a hardened or cracked rubber gasket, pressure loss, repeated coolant loss into the overflow bottle, or a coolant smell after driving. A failed two-way valve can cause overheating or coolant overflow. Installation: The cap twists onto the expansion tank neck and locks with a quarter turn, and no tools are required. Make sure the rubber gaskets seat evenly so the valve can hold pressure. Skipping a full seat is the most common cause of pressure loss after fitting. Important Notes: Compare your existing cap side by side and confirm the two-way pressure and vacuum design before ordering, because the one-way radiator cap looks similar but is not interchangeable and can cause overheating. This cap is for petrol engines; the EE20 boxer diesel uses a different overflow nipple angle and the diesel-specific cap.

• Verify your expansion tank neck diameter matches your existing cap before ordering. This is a two-way expansion tank cap (pressure release and vacuum recovery), NOT a radiator cap. Do not install on the radiator.
• Replaces OEM part numbers: 45153-AA000, 45153-AA010, 45642-KG000, SU003-01187, 16471-23030. Dorman equivalent: 54247. This is an aftermarket coolant expansion tank cap, not a genuine part.
• Compatible with Subaru: WRX 2002-2026, WRX STI 2004-2021, Forester 1998-2025, Impreza 1993-2025, Crosstrek 2013-2025, BRZ 2013-2025, Tribeca 2006-2014, Baja 2003-2006.
• Compatible with Toyota: GR86 2022-2025, 86 2017-2020. Scion: FR-S 2013-2016. Also fits Subaru Legacy 1990-2004 and Outback 1996-2004 (petrol engines only).
• Sold as a single cap. This fits petrol engines; the EE20 boxer diesel needs a different overflow nipple angle. Match the two-way valve and thread against your existing antifreeze reservoir cap before ordering to avoid the one-way radiator cap.