Product Description:
Hawks Motorsports is pleased to offer our clients the following.
This complete air-box mounting-hardware and air-lid clip kit is designed for compatible 1998-2002 Chevrolet Camaro and Pontiac Firebird models equipped with the factory-style LS1 V8 air-intake assembly.
The kit combines four OEM replacement-style lower air-box mounting bolts with two factory-style chrome air-lid fastener clips. Together, these components secure the lower air box to the vehicle and retain the front of the air-filter lid in its installed position.
Original fasteners are frequently missing, mismatched, corroded or weakened after repeated air-filter service. This six-piece kit restores the applicable mounting and retention points with a clean, original-style engine-compartment appearance.
Key Features
| Feature | Product specification |
|---|---|
| Producer | Hawks Motorsports |
| Product type | Air-box hardware and air-lid clip kit |
| Vehicle platform | Fourth-generation GM F-Body |
| Model years | 1998-2002 |
| Engine application | LS1 V8 |
| Lower air-box hardware | Four OEM replacement-style mounting bolts |
| Air-lid hardware | Two factory-style chrome fastener clips |
| Total quantity | Six pieces |
| Bolt reference | Replaces GM 11513947 |
| Clip reference | Replaces GM 25043286 |
| Application | Factory air-box and air-lid assemblies |
| Appearance | OEM-style finish |
| Condition | New replacement and reproduction components |
This Product Includes
- Four OEM replacement-style lower air-box mounting bolts
- Two factory-style chrome air-lid fastener clips
- Six total pieces
- OEM-style bolt finish
- Hardware for one compatible factory air-box assembly
- Replacement components for the original mounting and lid-retention locations
The lower air box, air-filter element, air lid, intake duct, mass-airflow sensor and other intake-system components are not included.
Six-Piece Kit Configuration
| Component | Quantity | Original-part reference |
|---|---|---|
| Lower air-box mounting bolts | Four | GM 11513947 |
| Air-lid fastener clips | Two | GM 25043286 |
| Total | Six | — |
The four mounting bolts secure the lower air-box assembly to the vehicle. The two spring-style clips retain the front edge of the compatible air lid against the lower air-box housing.
OEM-Style Finish
The mounting bolts feature a factory-style silver finish selected to complement the original underhood hardware. The two air-lid fastener clips have the chrome-style appearance used for the factory retention locations.
This OEM-finish version is intended for owners who prefer a restoration-oriented appearance. Separate black and chrome/silver custom-finish kits may be available for modified engine compartments.
Finish and surface appearance may differ slightly from aged original hardware because these are newly manufactured replacement components.
Year / Model Interchange
| Years | Make | Model | Required configuration |
|---|---|---|---|
| 1998-2002 | Chevrolet | Camaro Z28 | Factory-style LS1 V8 air box |
| 1998-2002 | Chevrolet | Camaro SS | Compatible LS1 V8 air box |
| 1998-2002 | Pontiac | Firebird Formula | Factory-style LS1 V8 air box |
| 1998-2002 | Pontiac | Trans Am | Factory-style LS1 V8 air box |
| 1998-2002 | Pontiac | Trans Am WS6 | Compatible Ram Air air box |
| 1998-2002 | Pontiac | Firehawk | Compatible LS1-style air box |
Special-edition and modified vehicles must be checked for the correct air-box configuration. Previous owners may have installed an aftermarket air lid, cold-air intake or modified lower housing.
Important Application Notes
- Intended for compatible 1998-2002 LS1-powered Camaro and Firebird models
- Designed for factory-style lower air-box and air-lid assemblies
- Includes four lower air-box mounting bolts
- Includes two air-lid fastener clips
- Contains six total pieces
- Bolts replace GM part number 11513947
- Clips replace GM part number 25043286
- Fits compatible base V8 and Ram Air-equipped vehicles
- Does not apply to V6 air-intake assemblies
- Aftermarket air lids may use different retention components
- Complete air-box assembly is not included
- Inspect the plastic air-box mounting locations before installation
Fitment should be determined by the installed air-box assembly rather than the vehicle’s model year alone.
Lower Air-Box Mounting Bolts
The four bolts replace the applicable original fasteners used to secure the lower air box. Original bolts may become unsuitable for reuse because of corrosion, damaged threads, missing washers or mismatched replacement hardware.
Before installing the new bolts, confirm that each threaded mounting location is clean, correctly aligned and free from broken hardware.
Do not use the bolts to pull a misaligned air-box housing into position. The plastic housing should rest naturally against its mounting locations before the fasteners are tightened.
Air-Lid Fastener Clips
The two spring-style clips retain the front of the air lid against the lower air-box assembly. A missing, bent or weakened clip can allow the lid to lift or sit unevenly.
Correct air-lid retention helps maintain:
- Proper air-filter positioning
- Consistent lid alignment
- Secure engagement between the upper and lower housings
- A finished factory-style appearance
- Easier inspection during routine air-filter service
Both clips should engage firmly without requiring excessive force. Resistance or misalignment may indicate an incorrectly positioned filter, distorted lid or incompatible aftermarket component.
Original-Part References
The mounting bolts are replacement-style components for original GM number 11513947.
The air-lid fastener clips are reproduction components for original GM number 25043286.
HM4GAIRBOXHDWR-OEM identifies the complete combined kit. It should not be represented as an original GM service-kit number.
Installation Information
Before installation:
- Park the vehicle on a level surface
- Switch off the ignition
- Allow the engine compartment to cool
- Compare the new hardware with the original pieces
- Confirm that four bolts and two clips are present
- Inspect the lower air-box housing for cracks
- Check the mounting holes and threaded attachment points
- Verify that the air filter is correctly seated
- Align the air lid with the lower housing
During installation:
- Position the lower air box before starting the bolts
- Start each bolt by hand
- Tighten the bolts evenly
- Avoid overtightening the bolts against the plastic housing
- Install one air-lid clip at each applicable front retention point
- Confirm that both clips engage securely
- Check that the lid sits evenly around the air-filter perimeter
- Verify that no intake wiring or hoses are pinched
After installation, gently check the lower housing and air lid for unwanted movement. The assembly should remain securely positioned without distorting the plastic components.
PART NUMBER
HM4GAIRBOXHDWR-OEM
FREQUENTLY ASKED QUESTIONS
What is included?
The kit contains four lower air-box mounting bolts and two air-lid fastener clips.
How many pieces are included?
Six pieces are included in total.
What finish does the kit have?
The mounting bolts have an OEM-style silver finish, while the air-lid fastener clips have a factory-style chrome appearance.
What vehicles does this kit fit?
It is designed for compatible 1998-2002 Chevrolet Camaro and Pontiac Firebird models equipped with an LS1 V8 and factory-style air-box assembly.
Does it fit a 1998 Camaro Z28?
Yes, when the vehicle retains the compatible factory-style LS1 air box and lid.
Does it fit a 2002 Camaro Z28?
Yes. It is intended for compatible 2002 Camaro Z28 factory air-box assemblies.
Does it fit a Camaro SS?
Yes, when the Camaro SS uses the compatible LS1 air-box and lid configuration.
Does it fit a Firebird Formula?
Yes. It fits compatible 1998-2002 Firebird Formula LS1 air-box assemblies.
Does it fit a Pontiac Trans Am?
Yes. It is intended for compatible 1998-2002 Pontiac Trans Am models.
Does it fit a Trans Am WS6?
Yes. It is intended for compatible WS6 and Ram Air-equipped factory air-box assemblies.
Does it fit a Firehawk?
It fits Firehawk models retaining a compatible LS1-style air-box assembly. Compare the installed intake components before ordering.
Does it fit a V6 Camaro or Firebird?
No. This kit is intended for the compatible LS1 V8 air-intake assembly.
Will it fit an aftermarket air lid?
Not necessarily. Aftermarket lids may use different clips, mounting points or retention methods. Compare the installed lid with the product photographs before ordering.
What GM number do the mounting bolts replace?
The four mounting bolts replace original GM part number 11513947.
What GM number do the air-lid clips replace?
The two air-lid fastener clips replace original GM part number 25043286.
Is HM4GAIRBOXHDWR-OEM an original GM part number?
No. It is the inventory number for this combined air-box hardware and air-lid clip kit.
Are the air-lid clips sold as a pair in this kit?
Yes. Two air-lid clips are included.
Does the kit contain enough components for one car?
Yes. The kit supplies four bolts and two clips for one compatible factory-style air-box assembly.
