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Rein EPK0156 Engine Coolant Reservoir Kit
| Brand | Rein EPK0156 |
|---|---|
| Application Type | Applicationspecific |
| Bullet Point 1 | Includes sensor (if applicable) and cap |
| Bullet Point 2 | Produced from virgin plastic meeting/exceeding oe specifications |
| Bullet Point 3 | Resistant to cracking and wear from heat cycles preventing coolan |
| Bullet Point 4 | Direct fitment allows easy installation |
| Container Type | Bx |
| Country of Origin | Cn |
| Item Height | 6.3000 |
| Item Length | 12.6000 |
| Item Level GTIN | 888544106804 |
| Item Qty | 1 |
| Item Quantity Size | 1 |
| Item Quantity Size UOM | Ea |
| Item UOM | Ea |
| Item Weight | 2.1100 |
| Item Weight Unit UOM | Lb |
| Item Width | 11.8100 |
| Product Desc Extended 240 | Rein oe quality expansion tank kits are designed to handle heat c |
| Product Desc Invoice 40 | Rein expansion tank kit |
| Product Desc Long 80 | Rein oe quality expansion tank kit |
| Product Desc Short 20 | Expansion tank kit |
| Warranty Distance | 24000 |
| Warranty Time | 24 |
| Fits | Audi · 32 vehicles |
OE quality kit. Matches original specifications for fit, form, and function.
Virgin plastic construction. No regrind helps resist cracking from heat cycles.
Direct fitment. Allows easy installation with no modifications needed.
Cross-references 8K0121405S for the same application. See all 1.
OE-Quality Expansion Tank Kit for Audi Cooling Systems
The Rein EPK0156 engine coolant reservoir kit is built for Audi cooling system service where a direct-fit expansion tank is needed. It is designed for select Audi Q5, S5, SQ5, S4, A5 Quattro, and A4 Quattro applications, with OE-style fitment and materials chosen for long-term durability.
- Includes sensor, if applicable, and cap
- Produced from virgin plastic meeting or exceeding OE specifications
- Resists cracking and wear from repeated heat cycles
- Direct fitment supports straightforward installation
- Built for select Audi Q5, S5, SQ5, S4, A5 Quattro, and A4 Quattro cooling system service
Detailed Product Overview
Rein EPK0156 is an OE-quality expansion tank kit engineered to replace a worn or damaged coolant reservoir with a part that matches the original system layout. The reservoir is molded from virgin plastic with no regrind, helping reduce the risk of heat-cycle cracking and premature material fatigue. For Audi Q5 and Audi S4 cooling system repairs, this part number provides a direct-fit solution that supports proper coolant storage and pressure management.
This part cross-references Audi/VW OE number 8K0121405S for the same application.
Common Cooling System Issues It Can Address
- Coolant loss from a cracked or aging reservoir
- Visible plastic damage from repeated engine heat cycles
- Faulty reservoir cap or sensor-related service needs, if applicable
- Fitment problems caused by an incorrect replacement tank
- Cooling system maintenance on high-mileage Audi vehicles
Installation Notes and Tips
Verify vehicle application before installation, especially on 2008-2009 Audi A5 Quattro and 2009 Audi A4 Quattro models with production-date notes. Confirm the existing reservoir layout, sensor provision, and cap style match the replacement part. Inspect hoses, clamps, and surrounding cooling components during service to help prevent repeat leaks.
Quality Assurance
Rein designs this expansion tank kit to meet or exceed OE material standards using virgin plastic for improved durability and service life. Part number EPK0156 is backed by a 24-month/24,000-mile warranty.
| Year | Make | Model | Body Type | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2017 | Audi | Q5 | — | 3.0L | V6 | GAS | N/A | — |
| 2017 | Audi | S5 | — | 3.0L | V6 | — | N/A | — |
| 2017 | Audi | SQ5 | — | 3.0L | V6 | — | N/A | — |
| 2016 | Audi | Q5 | — | 3.0L | V6 | GAS | N/A | — |
| 2016 | Audi | S4 | — | 3.0L | V6 | — | N/A | — |
| 2016 | Audi | S5 | — | 3.0L | V6 | — | N/A | — |
| 2016 | Audi | SQ5 | — | 3.0L | V6 | GAS | N/A | — |
| 2015 | Audi | Q5 | — | 3.0L | V6 | GAS | N/A | — |
| 2015 | Audi | S4 | — | 3.0L | V6 | — | N/A | — |
| 2015 | Audi | S5 | — | 3.0L | V6 | — | N/A | — |
| 2015 | Audi | SQ5 | — | 3.0L | V6 | GAS | N/A | — |
| 2014 | Audi | Q5 | — | 3.0L | V6 | GAS | N/A | — |
| 2014 | Audi | S4 | — | 3.0L | V6 | — | N/A | — |
| 2014 | Audi | S5 | — | 3.0L | V6 | — | N/A | — |
| 2014 | Audi | SQ5 | — | 3.0L | V6 | GAS | N/A | — |
| 2013 | Audi | Q5 | — | 3.0L | V6 | GAS | N/A | — |
| 2013 | Audi | S4 | — | 3.0L | V6 | — | N/A | — |
| 2013 | Audi | S5 | — | 3.0L | V6 | — | N/A | — |
| 2012 | Audi | Q5 | — | 3.2L | V6 | — | N/A | — |
| 2012 | Audi | S4 | — | 3.0L | V6 | — | N/A | — |
| 2012 | Audi | S5 | — | 3.0L | V6 | — | N/A | — |
| 2011 | Audi | Q5 | — | 3.2L | V6 | — | N/A | — |
| 2011 | Audi | S4 | — | 3.0L | V6 | — | N/A | — |
| 2011 | Audi | S5 | — | 3.0L | V6 | — | N/A | — |
| 2010 | Audi | A5 Quattro | — | 3.2L | V6 | — | N/A | — |
| 2010 | Audi | Q5 | — | 3.2L | V6 | — | N/A | — |
| 2010 | Audi | S4 | — | 3.0L | V6 | — | N/A | — |
| 2010 | Audi | S5 | — | 3.0L | V6 | — | N/A | — |
| 2009 | Audi | A4 Quattro | Sedan | 3.2L | V6 | — | N/A | From 3/29/08 |
| 2009 | Audi | A5 Quattro | — | 3.2L | V6 | — | N/A | — |
| 2009 | Audi | Q5 | — | 3.2L | V6 | — | N/A | — |
| 2008 | Audi | A5 Quattro | — | 3.2L | V6 | — | N/A | From 3/11/08 |
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