Add to favorites
5Q0121407D Engine Coolant Reservoir Tank with Sensor & Cap - Compatible with 2015-2016 Audi A3 1.4L, 1.8L, S3 2.0L & Volkswagen Golf, GTI 1.4L, 1.8L | Replaces Part# 5Q0121407F — Open-Box, 19% Off
Brand: PPNZQAUT
Condition: Used - Mint
$2314
$2861
-19% Save $547
Updated: 45 days ago
Description
What Does a Coolant Reservoir Do? - A coolant reservoir is a small plastic tank that is connected to the radiator of a car’s cooling system. Its primary function is to provide a space for excess coolant to expand and contract as the engine heats up and cools down. Keep the engine operating at a normal temperature.
Part Numbers - 5Q0121407D, 5Q0121407F. This radiator surge tank matches the fit and function of the original part. This is NOT a genuine part, it's an aftermarket replacement part.
Compatible with Select Audi & Volkswagen Models - This radiator overflow tank is compatible with 2015 - 2016 Audi A3 L4 1.4L, 2015 - 2016 Audi A3 L4 1.8L, 2015 - 2016 Audi A3 L4 2.0L, 2015 - 2016 Audi S3 L4 2.0L, 2016 Volkswagen Golf L4 1.4L, 2015 - 2016 Volkswagen Golf L4 1.8L, 2015 Volkswagen Golf L4 2.0L, 2015 - 2016 Volkswagen GTI L4 2.0L. Please check the description or enter Year / Make / Model on Amazon's Fitment Filter system to confirm your compatibility.
Replacement Instruction - Turn off and cool down the car, disconnect the drain line, remove the retaining bolts and swap in the new reservoir tank. Professional installation is highly recommended.
Durable and Long Lasting - This Coolant Recovery Tank is manufactured from quality materials, durable and long lasting. It is thoroughly tested to ensure optimum fit and performance on specific vehicle applications.
Features -
Premium material.
Direct replacement.
Keeps the engine operating at a normal temperature.
Specifications -
Part Number: 5Q0121407D, 5Q0121407F.
Color: Grey
Position: Front
Cap Included: Yes
Sensor Included: Yes
Cap Type: Spring Loaded Twist
Material: Plastic
Compatible with Select Audi Models -
2015 - 2016 Audi A3 L4 1.4L Petrol 2015 - 2016 Audi A3 L4 1.8L Petrol 2015 - 2016 Audi A3 L4 2.0L Diesel 2015 - 2016 Audi S3 L4 2.0L Petrol 2016 - 2016 Volkswagen Golf L4 1.4L Petrol 2015 - 2016 Volkswagen Golf L4 1.8L Petrol 2015 - 2015 Volkswagen Golf L4 2.0L Diesel 2015 - 2016 Volkswagen GTI L4 2.0L Petrol Package Includes -
1 x Coolant Radiator Reservoir Tank with Sensor & Cap
Premium material.
Direct replacement.
Keeps the engine operating at a normal temperature.
Specifications -
Part Number: 5Q0121407D, 5Q0121407F.
Color: Grey
Position: Front
Cap Included: Yes
Sensor Included: Yes
Cap Type: Spring Loaded Twist
Material: Plastic
Compatible with Select Audi Models -
1 x Coolant Radiator Reservoir Tank with Sensor & Cap
Sold by
Amazon Warehouse
Official Amazon outlet for open-box & returned items
- Backed by Amazon's A-to-Z Guarantee
- 30-day return policy
- Ships from Amazon fulfillment centers
- Price verified on Amazon
Product Details
- SKU:
- awhd-us-b0d1tc1yqp
- Model:
- 5Q0121407D
- Country:
- US
- ASIN:
- B0D1TC1YQP
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $5 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for PPNZQAUT products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.







![Sterlix Coolant Tank Fits Kenworth T680 T880 Peterbilt 579 2013-2017 [with Cap] Radiator Reservoir Tank Replacement Kenworth T680 T880 Peterbilt 579 Semi Trucks Engine Coolant Bottle Tank by Sterlix - Used condition - US$83.99](https://m.media-amazon.com/images/I/41wvXPXMR6L._SX600_.jpg)









![A-Premium Engine Radiator Coolant Expansion Reservoir Overflow Tank [W/Cap] by A-Premium - Used condition - US$195.78](https://m.media-amazon.com/images/I/41T53W5v4kL._SX600_.jpg)