Fits for GMC Models：

• Fits for GMC Sierra 1500 2007-2008
• Fits for GMC Yukon 2007-2008
• Fits for GMC Yukon XL 1500 2007-2008

Fit for Hummer Models

• Fits for H2 2008

Fits for Pontiac Models

• Fits for Pontiac G8 2009-2009

Specification:

• Part Number: 300116,1918S,300-116
• Basic Operating RPM Range: 3,500-8,000
• Intake Style: Hi-Ram
• Intake Manifold Height: Front/Rear Height 12.32 in
• Throttle Body Bore Size: 92mm
• Part Type: Intake Manifolds(EFI)
• Fuel Injection Style: Multi-port
• Intake Section Included: Complete
• Engine Block Deck Height: Standard deck
• Cylinder Head Configuration: Rectangular Port LS3/L76/L92/L99
• Intake Material: Aluminum(stain)
• EGR: No
• Package included: 1*intake manifold&1*fuel rail kit &some parts shown in the picture

Please kindly refer to the below Important Installation Notes:

1. Alignment Issue: Intake Doesn't Seat Fully

Q: My new intake doesn't seat fully, and the bolt holes seem slightly misaligned. Why? A: This may occur if your engine heads or block have been milled, resulting in a narrower valley. The intake manifold may require machining to compensate for this variance and ensure proper alignment.

2. Bolt Replacement Requirement

Q: Do I need new intake manifold bolts when switching to a JGhyperX aluminum intake? A: Yes. Since aluminum manifolds typically have thicker mounting flanges, stock bolts may be too short. Always use bolts of appropriate length to achieve a proper seal.

3. Surface Damage & Seal Integrity

Q: Will the intake still seal if the mounting surface is scratched? A: For minor imperfections, composite gaskets can often conform under compression. However, severe damage may compromise the seal. We recommend inspecting and resurfacing the manifold if deep scratches are present.

4. Torque Specifications & Sequence

Q: What torque specification and sequence should I use? A: Correct torque values and tightening sequences are provided in the included instructions. Strictly follow these guidelines to ensure a reliable seal.

5. Hood Clearance Consideration

Q: Will the JGhyperX intake fit under my factory hood? A: Unfortunately due to the unlimited amount of variables that exist with each custom build or upgrade, you will need to check your available hood clearance for your application if this is a concern.

6. Carburetor Spacer Selection

Q: Should I use an open-center or four-hole carburetor spacer? A: - Open spacers increase plenum volume. - 4-hole spacers enhance low-RPM torque and throttle response. - Wood fiber laminate spacers help reduce heat transfer.

7. End Seal Recommendations

Q: How should I seal the front and rear of the intake to the block? A: For applications that traditionally use end seals, apply a ¼" continuous bead of RTV silicone, ensuring it overlaps the corners of the intake gaskets.