Click to zoom in
SKU: 63785 | UPC: 84663637858
Moroso 02-07 Subaru WRX/Sti Coolant Expansion Tank - Direct Bolt-In Replacement
The Moroso 63785 coolant expansion tank serves as a direct bolt-in replacement for 2002-2007 Subaru Impreza WRX and STi models. This aluminum tank provides increased capacity to handle higher coolant volumes in modified engines, preventing overflow during track or street use. It maintains proper coolant levels for consistent engine temperatures and performance reliability.
Key Features
- Direct Bolt-In Fit: Matches OEM mounting points for 02-07 WRX/STi with no cutting or fabrication needed, installs in under 30 minutes.
- Billet Aluminum Build: Lightweight at 1.4 lbs yet strong enough for high-pressure racing applications, resists cracking under heat cycles.
- 50% Larger Capacity: Holds 32 ounces versus stock 20 ounces, accommodates expanded coolant from turbocharged setups without spilling.
- Threaded OEM-Style Cap: Ensures airtight seal to prevent contamination and pressure loss, includes vent for safe operation.
- Black Anodized Finish: Protects against corrosion and road salt, maintains clean engine bay appearance over time.
Product Notes
- Designed as plug-and-play upgrade for stock plastic tanks prone to failure.
- Compatible with all coolant types including ethylene glycol mixes.
- Securely packaged in 12 x 10 x 8 inch box for damage-free delivery.
Installation Notes
- Professional installation recommended.
- Drain coolant system before removal of stock tank.
- Uses factory hardware and hoses, torque bolts to 10 ft-lbs.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2007 | Subaru | Impreza | WRX STI |
Why Choose Moroso?
- Over 60 years in racing components for Subaru enthusiasts.
- CNC-machined parts tested in NHRA and SCCA competition.
- Precise engineering ensures leak-free performance under boost.
Frequently Asked Questions
-
Q: Will this fit my 2005 Subaru WRX?
A: Yes, direct fit for all 2002-2007 Impreza WRX models including sedan and wagon. -
Q: What material is the tank made from?
A: Billet 6061 aluminum with anodized coating for durability and heat resistance. -
Q: Is any modification required for install?
A: No modifications needed, bolts directly to factory locations with included O-ring seal.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: 12 x 10 x 8 inches sturdy box
- Weight: 1.4 lbs product, 2 lbs shipped
Read More
Cooling
Shop performance cooling parts at Black Ops Auto Works for premium radiators, thermostat housings, thermostats, coolant reservoirs, expansion tanks, radiator hoses, oil coolers, transmission coolers, fans and shrouds, water pumps, and thermal management upgrades for street, track, towing, diesel, and high-horsepower builds. Whether you are trying to control engine temps, improve reliability, or support demanding performance use, this collection is built around proven cooling-system upgrades for serious enthusiasts. Shop Cooling Parts by Category Browse automotive cooling system components across key product categories, including: Radiators Coolant reservoirs and expansion tanks Thermostat housings and thermostats Radiator hose kits and silicone coolant hoses Oil coolers and oil cooler accessories Transmission coolers Coolant bypass kits and coolant filters Fans and shrouds Radiator caps Water pumps Radiator shrouds, radiator stays, and cooling plates Thermal wrap, thermal tape, an...
View Cooling Products
Engine
Browse all our engine parts and engine components at Black Ops Auto Works, including oil catch cans, pulleys, thermostats, radiator components, coolant accessories, engine covers, fuse box covers, cap covers, throttle bodies, cooling upgrades, and engine bay dress-up parts for trucks, SUVs, muscle cars, and performance vehicles. Whether you are maintaining a street build, upgrading a high-horsepower setup, or improving under-hood styling, this collection is built for customers searching for engine parts, engine bay accessories, cooling upgrades, catch cans, and performance engine components. Shop Top Engine Brands Find trusted brands across the engine category, including: Billet Technology Mishimoto ZPE GripTec MightyMouse Solutions Cordes Performance Granatelli Cometic BBK Corsa These brands are popular for oil catch cans, thermostat housings, engine bay accessories, radiator and coolant upgrades, supercharger pulleys, throttle bodies, and performance engine hardware. Engine Pa...
View Engine Products
Expansion Tanks
Welcome to our exclusive Expansion Tanks collection, where quality meets reliability. Designed to accommodate pressure variations in cooling systems, our expansion tanks are essential for maintaining system efficiency and longevity of youyr vehicles overall saftey. Features of Our Expansion Tanks Durable Construction: Made from high-quality materials to withstand pressure and temperature fluctuations. Variety of Sizes: Available in multiple sizes to fit your specific needs and applications for your vehicle. Easy Installation: our Expansion tanks are designed for straightforward installation to save you time and effort. Why Choose Our Expansion Tanks? Our Expansion Tanks ensure optimal performance of your heating and cooling systems, reducing wear and tear while enhancing safety. With competitive pricing and exceptional customer service, we are your go-to source for reliable expansion tanks. Shop now and discover how our expertly curated collection can elevate your system's ef...
View Expansion Tanks Products
Moroso
Shop Moroso performance parts at Black Ops Auto Works, your trusted source for Moroso oil pans, oiling system components, oil pumps, oil pump pickups, breather tanks, catch cans, valve covers, racing oil filters, radiator caps, and cooling accessories. Moroso is one of the most recognized names in motorsports and high-performance automotive parts, trusted by racers and builders for durability, precision, and race-proven performance. Whether you are building a drag car, road race car, street performance vehicle, LS swap, Coyote build, or custom engine setup, Moroso products deliver the oil control, crankcase ventilation, and engine support serious enthusiasts demand. Shop Moroso Oil Pans, Catch Cans & Racing Parts At Black Ops Auto Works, we carry a wide selection of Moroso racing and performance parts for oiling, cooling, and engine bay upgrades. Popular Moroso Product Categories: Moroso Oil Pans – Wet sump and dry sump oil pans for drag racing, road racing, and performance st...
View Moroso Products