Volvo VN/VNL/VNM Coolant Reservoir / Expansion Tank (2004–2007) – 603-5504
Warranty Information
ROADWEST stands behind the parts we sell. Unless otherwise stated on the product page, your purchase is covered by a 1-Year Limited Warranty against manufacturing defects under normal use.
What’s covered
- Defects in materials or workmanship
- Premature failure caused by factory-related issues
What’s not covered
- Normal wear and tear, cosmetic aging, corrosion from environment/road salt
- Damage from improper installation, incorrect wiring, modifications, misuse, or accidents
- Labor costs (installation/removal), downtime, towing, or other indirect costs
How to file a claim
Contact us with:
- Order number
- Product name / SKU
- Clear photos or a short video showing the issue
If approved, ROADWEST will provide an appropriate resolution (replacement parts, replacement unit, or refund/credit).
Please do not send items back without return authorization.
For more details, see our Shipping Policy, Easy Return & Refund Policy, and Warranty pages.
Shipping & Returns
Most ROADWEST orders ship from our U.S. warehouses within 1–2 business days. Standard ground delivery in the contiguous United States is typically 1–3 business days, with freight service used for oversized or extra-heavy parts.
- Shipping area: United States only (no PO Boxes or international addresses).
- Processing time: In-stock items usually ship within 1–2 business days, Mon–Fri.
- Delivery: Standard ground or LTL freight depending on size and weight.
- Returns: Most unused items may be returned within 30 days of delivery, subject to inspection and our return guidelines.
- Costs: Original and return shipping are generally the customer’s responsibility, unless the issue is caused by ROADWEST (wrong item, damaged on arrival, etc.).
For full details, please review our Shipping Policy and Easy Return & Refund Policy before placing your order.
The High Soar 603-5504 Engine Coolant Reservoir Tank is designed as a direct aftermarket replacement for Volvo VN, VNL and VNM heavy-duty trucks. Built to OEM standards, it restores proper coolant storage and circulation to keep your engine running at the correct operating temperature.
Manufactured from quality materials and engineered to withstand underhood heat and constant vibration, this coolant reservoir tank is an ideal solution when your original tank is cracked, leaking or discolored. By properly managing coolant expansion and return, it helps prevent air from entering the system and reduces the risk of corrosion and overheating.
- Direct aftermarket replacement – Matches OE part numbers 20519037, 20519039, 8140024, 1674922, 20461002, 20505819.
- Vehicle-specific fit – Designed for Volvo VN, VNL and VNM trucks (2004–2007).
- Durable construction – Built from high-quality materials to resist underhood heat, engine vibration and long-term use.
- Improved cooling performance – Helps control coolant flow and supports quick warm-up to working temperature while preventing continuous air ingress.
- Ideal OE-style solution – Engineered for a seamless installation with no major modifications required.
- Important note – Always verify your truck’s Year / Make / Model and OE part number before ordering.
Compatibility
This engine coolant reservoir / overflow expansion tank is compatible with selected Volvo heavy-duty trucks, including:
- Volvo VN (2004–2007)
- Volvo VNL (2004–2007)
- Volvo VNM (2004–2007)
For best results, confirm that one of the OE part numbers below matches your original tank:
- 20519037
- 20519039
- 8140024
- 1674922
- 20461002
- 20505819
Specifications
| Brand | High Soar |
|---|---|
| Product Type | Engine Coolant Reservoir / Expansion Tank |
| OE Reference | 20519037, 20519039, 8140024, 1674922, 20461002, 20505819 |
| Vehicle Service Type | Volvo VN, Volvo VNL, Volvo VNM (2004–2007) |
| Exterior Finish | Metal |
| Fuel Type | Diesel (heavy-duty truck applications) |
| Item Weight | Approx. 3.38 kg |
| Function | Stores and regulates coolant, helps maintain system pressure and engine operating temperature |
| Installation | Direct-fit replacement; professional installation recommended |
| Manufacturer | High Soar |