This Sniper EFI sealing plate kit eliminates air turbulence between the throttle body and intake manifold on 4150 flange Sniper EFI systems. That turbulence typically shows up as a whistling noise, and this plate/gasket combination closes the gap for quieter operation.
Specifications:
- Flange: 4150
- Includes: (1) Open Plenum Gasket, (1) Four-Barrel Gasket, (1) Sealing Plate
- Gasket Included: Yes
- Part Number: 520-2
Refer to installation instructions 199R11793 for correct placement order.
FAQ
What does the 520-2 sealing plate kit solve?
It eliminates air turbulence between the throttle body and intake manifold on 4150 flange Sniper EFI systems, which typically presents as a whistling noise.
What's included in the kit?
An open plenum gasket, a four-barrel gasket, and the sealing plate.
Is there an installation guide?
Yes, refer to instruction sheet 199R11793 for the correct gasket and plate placement order.

