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The GrimmSpeed 02-14 Subaru WRX/STI Hella Horn Wiring Harness is designed for the 2002-2014 Subaru Impreza. Match manufacturer part number GRM040005, the complete vehicle or system configuration, dimensions, connections, and included components before ordering.
Key Features
- Compatible with the OEM horn harness connector.
- Plug the male terminal end into the factory OEM harness connector.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2002-2014 | Subaru | Impreza | Confirm engine, body style, system configuration, and exact interface |
Specifications
| Brand | GrimmSpeed |
|---|---|
| Manufacturer Part Number | GRM040005 |
| Product Type | Horn Accessories |
| Fitment Type | Vehicle Specific |
| Condition | New |
| SKU | GRMGRM040005 |
| Wire Gauge | 16ga Automotive Grade |
| Terminal Type | Heat Shrink Crimp On |
| Fitment | 2002-2014 Subaru WRX, 2004-2014 Subaru STI |
| UPC | Not published by manufacturer |
What's Included
One new GrimmSpeed horn accessories identified by manufacturer part number GRM040005, in the quantity stated by the title. Additional wiring, pipes, hoses, clamps, fittings, gaskets, fluids, tuning, tools, and installation hardware are included only when expressly listed for this exact part number.
About GrimmSpeed
GrimmSpeed develops exhaust, forced-induction, cooling, engine, electronics, and exterior components for import and performance vehicle applications.
Related GrimmSpeed Products
- Shop all GrimmSpeed products
- GrimmSpeed 02+ WRX/STi BroTie Hella Horn Mounting Bracket
- GrimmSpeed 02-14 Subaru WRX/STI Hella Horn Wiring Harness
- GrimmSpeed 02-21 Subaru WRX / 04-21 Subaru STI BroTie Hella Horn Mounting Bracket
Frequently Asked Questions
How do I confirm this GrimmSpeed part is correct?
Match the exact manufacturer part number, dimensions, material, finish, quantity, electrical requirements, and connection or mounting interface before ordering.
Is this a complete kit?
Only the components stated in the title and What’s Included section are supplied. Related wiring, fittings, hoses, clamps, sensors, tools, or hardware may be sold separately.
Can this part be used in a custom application?
Universal parts may work when every dimension and interface is verified. Vehicle-specific or system-specific parts should not be treated as universal without current manufacturer confirmation.
Installation Instructions
Follow the current GrimmSpeed instructions and the vehicle service manual for part number GRM040005. Compare every component, connection, dimension, and mounting point before disassembly. Use the correct tools, fasteners, torque values, fluids, wiring protection, and safety procedures, then inspect for leaks, interference, heat exposure, clearance, and secure operation before normal use.
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