Coolant Expansion Tank / Coolant Reservoir OEm No 5Q0121407AA – Audi A3, Q2, Q3, VW Golf 7, Passat B8, Tiguan & More
Coolant Expansion Tank / Coolant Reservoir with Level Sensor – OE 5Q0121407AA – Audi A3, Q2, Q3, VW Golf 7, Passat B8, Tiguan & More
Product Description
Maintain proper cooling system performance with this high-quality aftermarket Coolant Expansion Tank (Coolant Reservoir), manufactured to OE specification 5Q0 121 407 AA. Designed to store excess coolant and regulate cooling system pressure, this reservoir helps prevent overheating while ensuring consistent coolant circulation throughout the engine.
Manufactured from durable polypropylene (PP), this coolant tank is resistant to heat, pressure, and chemical degradation commonly found in modern cooling systems. It features an integrated coolant level sensor provision for accurate monitoring of coolant levels and helps protect the engine from costly overheating damage.
Ideal for replacing cracked, leaking, or discoloured expansion tanks commonly found on MQB-platform Audi and Volkswagen vehicles.
Key Features
- Direct replacement for OE number 5Q0121407AA
- Manufactured from durable Polypropylene (PP)
- Integrated coolant level sensor provision
- Includes mounting connections as per OE specification
- Precision moulded for perfect fitment
- Resistant to heat, pressure and coolant chemicals
- Helps maintain correct cooling system pressure and coolant levels
- Suitable for petrol and diesel applications
- Designed to meet or exceed OEM specifications
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Coolant Expansion Tank / Reservoir |
| OE Number | 5Q0 121 407 AA |
| Material | PP (Polypropylene) |
| Internal Thread Size | M63 x 3 |
| Number of Connectors | 2 |
| Coolant Level Sensor | Yes |
| Cap Included | No |
| Mounting Position | Engine Cooling System |
| Condition | New |
AUDI
A3/S3 (8V1, 8VK) 2012 - 2018
1.0 TFSI (CHZD) - 85 kW / 115 HP
1.2 TFSI (CJZA) - 77 kW / 105 HP
1.2 TFSI (CYVB) - 81 kW / 110 HP
1.4 TFSI (CMBA|CXSA) - 90 kW / 122 HP
1.4 TSI (CZEA) - 110 kW / 150 HP
1.6 TDI (CLHA) - 77 kW / 105 HP
2.0 TDI (CRFC) - 105 kW / 143 HP
A3 / S3 Convertible (8V7, 8VE) 2014 - 2021
1.4 TFSI (CXSB|CZCA) - 92 kW / 125 HP
A3 / S3 Saloon (8VS, 8VM) 2013-2021
1.0 TFSI (CHZD) - 85 kW / 115 HP
1.4 TFSI (CXSA) - 90 kW / 122 HP
1.4 TFSI (CXSB|CZCA) - 92 kW / 125 HP
1.4 TSI (CZEA) - 110 kW / 150 HP
1.6 TDI (CLHA) - 77 kW / 105 HP
A3 / S3 Sportback (8VA, 8VF) 2013-2021
1.0 TFSI (CHZD|DKRF) - 85 kW / 115 HP
1.2 TFSI (CJZA) - 77 kW / 105 HP
1.4 TFSI (CMBA|CXSA) - 90 kW / 122 HP
1.4 TSI (CZEA) - 110 kW / 150 HP
1.6 TDI (CLHA) - 77 kW / 105 HP
2.0 TDI (CRBC|CRLB|CRUA|DBGA|DCYA|DEJA|DFGA) - 110 kW / 150 HP
2.0 TDI (CRFC) - 105 kW / 143 HP
Q2 (GAB, GAG) 2016 - 2026
1.0 TFSI (CHZJ) - 85 kW / 115 HP
2.0 TDI (CRFC) - 105 kW / 143 HP
Q3 (F3B) 2018 - 2026
35 TDI (DFGA|DTSA|DTSB|DXPA) - 110 kW / 150 HP
Volkswagen
GOLF SPORTSVAN VII (AM1, AN1) 2014 - 2026
1.2 TSI (CYVB) - 81 kW / 110 HP
1.4 TSI (CZCA) - 92 kW / 125 HP
2.0 TDI (CRLD|CRVA|DCYB) - 81 kW / 110 HP
GOLF VII (5G1, BQ1, BE1, BE2) 2012 - 2026
1.0 TSI (CHZC) - 81 kW / 110 HP
1.2 TSI (CJZA) - 77 kW / 105 HP
1.2 TSI (CYVB) - 81 kW / 110 HP
1.4 TSI (CHPA|CPTA) - 103 kW / 140 HP
1.4 TSI (CMBA|CXSA) - 90 kW / 122 HP
1.4 TSI (CZCA) - 92 kW / 125 HP
1.4 TSI (CZDA|CZEA) - 110 kW / 150 HP
2.0 GTD (CRGA) - 130 kW / 177 HP
2.0 GTI (CHHA) - 169 kW / 230 HP
2.0 GTI (CHHB|CNTC|CXCB|CXDA) - 162 kW / 220 HP
2.0 GTI Clubsport (CJXE) - 195 kW / 265 HP
2.0 GTI Clubsport S (CJXG) - 228 kW / 310 HP
2.0 GTI TCR (CJXH|DNUC) - 213 kW / 290 HP
2.0 R 4motion (CJXB) - 206 kW / 280 HP
2.0 R 4motion (CJXD|DJHB|DNUC) - 213 kW / 290 HP
2.0 R 4motion (CJXG|DJHA) - 228 kW / 310 HP
2.0 TDI (CRBC|CRLB|CRMB|CRUA|DCYA|DEJA|DFGA) - 110 kW / 150 HP
2.0 TDI (CRVA|CYKB|DCYB|DEJB|DFGB) - 81 kW / 110 HP
GOLF VII Van (5G1) 2012 - 2026
1.2 TSi (CJZA) - 77 kW / 105 HP
1.4 TSi (CXSA) - 90 kW / 122 HP
1.6 TDi (CLHA) - 77 kW / 105 HP
PASSAT B8 (3G2, CB2) 2015-2019
1.8 TSI (CJSA|CJSC) - 132 kW / 180 HP
2.0 TDI (CRGA) - 130 kW / 177 HP
2.0 TSI (CHHB|CXDA) - 162 kW / 220 HP
TIGUAN (AD1, AX1) 2016 - 2026
1.4 TSI (CZCA|CZDB) - 92 kW / 125 HP
1.4 TSI (CZDA|CZEA|DJVA) - 110 kW / 150 HP
2.0 TDI (CYKC) - 81 kW / 110 HP
2.0 TDI 4motion (CRFD) - 105 kW / 143 HP
2.0 TDI 4motion (CRGB) - 130 kW / 177 HP
2.0 TDI 4motion (DBGC|DFGA|DTSA|DTSB) - 110 kW / 150 HP
2.0 TSI 4motion (CHHB) - 162 kW / 220 HP
2.0 TSI R 4motion (DNFG|DSFE) - 235 kW / 320 HP
TIGUAN ALLSPACE (BW2, BJ2) 2017-2026
1.4 TSI (CZDA|CZEA) - 110 kW / 150 HP
2.0 TDI 4motion (DBGC|DFGA|DTSA|DTSB) - 110 kW / 150 HP
2.0 TSI 4motion (CXDA|DNJA) - 162 kW / 220 HP
2.0 TSI 4motion (DGVA) - 132 kW / 180 HP
T-ROC (A11. D11) 2017-2026
1.4 TSI (DJKA) - 110 kW / 150 HP
2.0 TSI 4motion (CZPB|DKZA) - 140 kW / 190 HP
Installation Notes
Ensure the cooling system is cold before installation.
Inspect coolant hoses and connections for damage or leaks.
Transfer the coolant level sensor if required.
Use the correct coolant specified by the vehicle manufacturer.
Bleed the cooling system after installation to remove trapped air.