GatesPart #: 51878

Gates 51878 Radiator Coolant Hose - Upper
22 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$78.05Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Molded Coolant Hose, Upper
Fitment: Audi, A4, A4 allroad, A4 Quattro, A5, A5 Quattro, and A5 Sportback
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? See all Radiator Coolant Hose options
Gates 51878 Radiator Coolant Hose - Upper
| Brand | Gates |
|---|---|
| Part Number | 51878 |
| Position | Molded Coolant Hose, Upper |
| Material | Epdm, plastic |
| End 1 Inside Diameter | 1.18 |
| End 1 Inside Diameter | 30 |
| End 2 Inside Diameter | 1.18 |
| End 2 Inside Diameter | 30 |
| Contains Spring | No |
| Centerline Length | 24.8 |
| Centerline Length | 630 |
| Branch Quantity | 0 |
| 9839 | Yes |
| 9845 | 2 |
| 9940 | Yes |
| 9942 | 2 female quick connectors, outlet |
This part fits 22 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2020 | Audi | A4 | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2020 | Audi | A4 allroad | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2020 | Audi | A4 Quattro | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2020 | Audi | A5 Quattro | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2020 | Audi | A5 Sportback | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2019 | Audi | A4 | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2019 | Audi | A4 allroad | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2019 | Audi | A4 Quattro | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2019 | Audi | A5 | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2019 | Audi | A5 Quattro | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2019 | Audi | A5 Sportback | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2018 | Audi | A4 | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2018 | Audi | A4 allroad | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2018 | Audi | A4 Quattro | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2018 | Audi | A5 | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2018 | Audi | A5 Quattro | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2018 | Audi | A5 Sportback | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2017 | Audi | A4 | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2017 | Audi | A4 allroad | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2017 | Audi | A4 Quattro | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2016 | Audi | A4 | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2016 | Audi | A4 Quattro | 2.0L | L4 | FLEX | Upper | Molded Coolant Hose |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
518788W0122101BF11990R251130
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.