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You may return most new, unopened items within 60 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within 72 hours of receiving your package to the our warehouse, however, in many cases you will receive a refund more quickly.
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
The Radiator Coolant Expansion Tank – Jaguar XF / XJ (OEM 4R838A080AC) is a direct-fit coolant reservoir designed to replace the original overflow tank on Jaguar XF (X250) and Jaguar XJ (X351) models. This expansion tank collects excess engine coolant from the radiator as it warms and expands, then feeds it back into the system as the engine cools — helping maintain stable coolant levels and pressure control in the cooling system. Maintaining proper coolant circulation is essential for preventing overheating, engine damage and cooling system failure on petrol or diesel Jaguar engines.
OEM Number: 6W838D065AB, 6W838D066AA, XR850837, C2P17700, JDE34572, 4R838A080AC, 4R838A080AB, 4R838A080AE, 4R838A080AD, 4R838101AB
COOLANT EXPANSION TANK FOR JAGUAR XF X250 XJ X351 2.7 3.0 C2Z11668 BRAND NEW
Quantity : 1
| Make | Model | Variant | Type | Engine | Chassis | Year |
|---|---|---|---|---|---|---|
| Jaguar | XF | Diesel Estate | 3.0 D | 2993cc 177KW 241HP 306DT(AJTDV6) | RWD -- X250 | 2012-2014 |
| Jaguar | XF | Diesel Estate | 3.0 D | 2993cc 202KW 275HP 306DT(AJTDV6) | RWD -- X250 | 2012-2014 |
| Jaguar | XF | Diesel Saloon | 2.7 D | 2720cc 152KW 207HP 7G(AJTDV6) | RWD I X250 | 2008-2015 |
| Jaguar | XF | Diesel Saloon | 3.0 D | 2993cc 155KW 211HP 306DT(AJTDV6) | RWD I X250 | 2009-2015 |
| Jaguar | XF | Diesel Saloon | 3.0 D | 2993cc 177KW 241HP 306DT(AJTDV6) | RWD I X250 | 2009-2015 |
| Jaguar | XF | Diesel Saloon | 3.0 D | 2993cc 202KW 275HP 306DT(AJTDV6) | RWD I X250 | 2009-2015 |
| Jaguar | XF | Petrol Saloon | 3.0 | 2967cc 175KW 238HP FG(AJV6) | RWD I X250 | 2008-2015 |
| Jaguar | XJ | Diesel Saloon | 3.0 SDV6 | 2993cc 202KW 275HP 306DT(AJTDV6) | RWD -- X351 | 2009-2016 |
| Jaguar | XJ | Diesel Saloon | 3.0 SDV6 | 2993cc 221KW 300HP 306DT(AJTDV6) | RWD -- X351 | 2015-2024 |
| Jaguar | XJ | Petrol Saloon | 3.0 V6 | 2967cc 175KW 238HP AJV6(3.0 Liter) | RWD -- X351 | 2011-2024 |
| Make | Model | Variant | Type | Engine | Chassis | Year |
Our SKU: TJAG4R838A080AC_94
All our Coolant Expansion Tank For Jaguar Xf I X250 Xj X351 2008-2016 3.0 D 4R838A080Ac are OEM quality and reliable after market car parts. This Coolant Expansion Tank For Jaguar Xf I X250 Xj X351 2008-2016 3.0 D 4R838A080Ac is specifically compatible with Jaguar: XF, XJ, .
Please use our make-model-year tool to check this part's compatibility with your vehicle. However, please note that our tool is for reference only and we recommend that you check the part number on your old unit prior to purchasing.
If you are still not sure about the compatibility of this part to your vehicle, please supply us with the VIN number or Reg number in our live chat or contact form! You can also find details on our purchasing & shipping guide here.
Direct OEM-Referenced Replacement: Built to match the original Jaguar part 4R838A080AC and associated references (e.g., 4R838A080AB/AD/AE, C2C39440, C2Z11668), ensuring correct fit and reliable performance without modification.
Restores Cooling System Function: Keeps coolant levels balanced under varying temperatures, helping your engine run at optimal operating temperature and preventing overheating during heavy use or hot weather.
Helps Prevent Coolant Loss: A worn, cracked or leaking expansion tank can cause coolant loss, low-coolant warnings and engine temperature issues — this replacement restores leak-free operation.
Enhanced Durability: Made from robust plastic material designed to withstand engine-bay heat, pressure cycling and vibration for long-term use.
Sensor-Ready Construction: Many aftermarket replacements support coolant level sensors and caps — making them compatible with vehicles that monitor coolant levels electronically.
Q1: What does the coolant expansion tank do?
A: The expansion tank captures excess coolant as the engine heats up, helps regulate pressure, and sends the fluid back into the system as it cools — supporting stable engine temperatures.
Q2: Which Jaguar models is part 4R838A080AC compatible with?
A: It is commonly fitted to Jaguar XF (X250) 2.7D / 3.0D / 3.0 petrol vehicles from around 2008–2015, and Jaguar XJ (X351) 3.0 SDV6 petrol/diesel variants from approximately 2009–2019 — always verify fitment with your exact year and engine.
Q3: How do I know if my expansion tank needs to be replaced?
A: Typical signs include visible cracks or leaks in the tank, low-coolant warnings, overheating, coolant puddles under the car, or fluctuating temperature gauges — all of which suggest the reservoir isn’t containing coolant properly.
Q4: Does the tank include a cap and sensors?
A: Many aftermarket expansion tanks are supplied with cap and support for factory coolant level sensors, but always check the product details to confirm what’s included.
Q5: Is replacing the expansion tank difficult?
A: Replacement is a moderate DIY task involving draining some coolant, removing hoses and fittings, and securing the new tank — many mechanically inclined owners can do it, but professional installation ensures correct sealing and no air pockets in the cooling system.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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