Dayco DP191 Engine Water Pump
The Dayco DP191 (GWP8391) is an accessory belt driven engine water pump engineered to meet or exceed OEM specifications. Dayco water pump kits have been a reliable industry mainstay for years — now that same Dayco quality is available in stand-alone water pumps, featuring upgraded materials for the bearing, impeller and gasket for exceptionally reliable performance across a wide range of applications.
- TS16949 quality standard throughout casting, foundry, machining and assembly
- 100% new aluminium cast material — no recycled materials
- Case-hardened roller bearings with durable surfaces allowing flex without breaking
- Single-piece forged-steel pulley with no welds that can be weak spots
- Improved impeller design for better performance, durability and longer life
- Unitized seals for better durability and leak protection
- 100% end-of-line leak tested
- 2 year / 40,000 km warranty
Note: This is an accessory belt driven water pump — not suitable for engines with timing belt or timing chain driven water pumps. Check the part number against your application before ordering.
| SKU | DP191 |
| Model # | DP191 |
| Barcode # | 9325361331206 |
| Brand | Dayco |
| Placement On Vehicle | Engine |
| Warranty | 2 Year/40,000 km |
| Type | Engine Water Pump |
| Manufacturer Warranty | 2 Year/40,000 km |
| Interchange Part Number | GWP8391 |
| Reference OE/OEM Number | GWP8391 |
| Manufacturer Part Number | DP191 |
| Industry Standard Number | GWP8391 |
| Position On Vehicle | Engine |
| Industry Standard Part Code | GWP8391 |
| Contains Liquid | No |

- One of the largest Automotive companies in Australia.
- Dayco products are of the highest quality with OE spec parts
- Dayco supply a variety of parts to the aftermarket industry including belts, pulleys, thermostats, tensioners among others.
- See our other items for more Dayco products
Packaging: Manufacturers periodically update their packaging and labelling. You may receive the current or a previous design — the product, formulation and part number are unchanged.
Fitment (vehicle-specific products): Vehicle fitment is based on manufacturer and supplier catalogue data and is kept as accurate as possible, but vehicle catalogues are not perfect. Some models had more than one part fitted depending on build date, engine, or component size/variant, and parts on older vehicles may have been replaced with non-original or different-style components.
Before you buy, compare the product images with the part currently fitted to your vehicle — check shape, size, connectors and mounting points. If the part on your vehicle looks different, please contact us before purchasing. It is the buyer's responsibility to confirm the part suits their vehicle before purchasing.
Not sure? Message us with your vehicle's registration number and state (preferred), or full VIN/build details, and we'll do our best to confirm fitment before you buy.
Parts returned because they do not suit the vehicle, where the listing matches the manufacturer's catalogue, are treated as a change of mind and must be unused, uninstalled and in original packaging. Nothing in this notice affects your rights under the Australian Consumer Law.