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Overflow Tank RE70856 for John Deere 3029 4045 Engine 5210 5310 5410 5520 5605
$207.99
Sale price
$207.99
Regular price
Available to Order
This coolant overflow tank is a high-quality aftermarket replacement for compatible John Deere engines that helps restore coolant recovery and expansion capacity.
Not sure which part fits your equipment?
Our Northline Parts team can help you find the right replacement. Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT | Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Product Overview
The expansion or overflow tank provides space for coolant movement as temperature changes. Cracks, leaks, damaged fittings, or a failed cap connection can lead to coolant loss and cooling-system problems.
This part replaces RE70856. Before ordering, compare the original component’s part number, tank shape, mounting points, hose fittings, sensor port, and cap style.
Key Features & Performance
- Restores coolant expansion and recovery capacity
- Helps prevent coolant loss from a cracked tank
- Designed for compatible hose and mounting locations
- Replacement for a damaged reservoir
Fitment & Compatibility
Compatible with select John Deere 3029 4045 Engine 5210 5310 5410 5520 5605 applications. Serial-number breaks, production changes, or equipment options may affect the required part.
Technical Specifications
- Product Type: Coolant Overflow Tank
- Compatible Brand: John Deere
- Part Number(s): RE70856
Frequently Asked Questions
Q: Why does the coolant tank keep cracking or leaking? A: Age and vibration can cause failure, but excess system pressure, a bad cap, overheating, or blocked hoses should also be checked.
Q: Is this an original OEM part? A: This is an aftermarket replacement; brand names and part numbers are used only to identify compatibility.
Compatibility may vary by serial number, production date, or equipment configuration. Verify fitment before purchase.