TSP 81049-1 Universal 4-Barrel EFI Throttle Body, 1000 CFM, 4150 Flange, Billet Aluminum, Natural, Each

Top Street Performance

$417.23
MSRP: $656.18
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SKU:
TSP81049-1
MPN:
81049-1
Condition:
New
Weight:
4.58 LBS
Shipping:
Calculated at Checkout

Applies To Continental U.S. orders only

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This 6061-T6 billet aluminum throttle body is designed for universal 4150-flange EFI applications, supporting responsive airflow control and clean fitment on properly matched intake setups. At 1.75" per bore across 4 bores, it's rated for approximately 1,000 CFM, sized to match airflow capacity with your intake manifold and engine combination.

Throttle actuation is cable-driven — this is not a drive-by-wire throttle body, so confirm your setup uses cable actuation before ordering. It has the correct geometry for the 700R4 kickdown. It accepts a standard 5-1/8" air cleaner flange. Gasket and mounting hardware are included; the IAC motor, TPS, and MAP sensor are not included, since these vary by ECU and tuning setup.

Confirm intake bore size, throttle control style, sensor configuration, and tuning requirements before installation — tuning may be required after installation depending on your specific EFI setup.

Applications
Fits manifolds with a standard 4150-style square-bore flange and standard bolt spacing. Common use cases include street performance applications, restoration projects, and custom EFI conversions.

Installation
Cable-actuated (700R4-style provision), 5-1/8" air cleaner flange. Gasket and mounting hardware included. IAC motor, TPS, and MAP sensor not included — see compatible part numbers below. Confirm throttle body bore size, 4150 flange compatibility, cable bracket needs, and hood clearance before final assembly.

Compatible Sensor Components (sold separately)

IAC (Idle Air Control Motor): GM #19333273 or Delphi #CV10027
TPS (Throttle Position Sensor): AC Delco #213-895 or GM #17106681
MAP Sensor: GM #12614973 or AC Delco #213-796

Confirm sensor and connector compatibility with your ECU before ordering replacement sensors.

Compatibility With Universal 4150-Flange EFI Throttle Body Applications

  • Fits manifolds with a standard 4150-style square-bore flange and standard bolt spacing
  • 4-barrel, 1.75" bore (4 bores), rated for approximately 1,000 CFM
  • Throttle actuation: Cable (700R4-style cable provision)
  • Accepts a standard 5-1/8" air cleaner flange

Common Vehicle Applications

  • Street performance applications
  • Restoration projects
  • Custom EFI builds

Features

  • 1,000 CFM 6061-T6 billet aluminum throttle body fits standard 4150 flanges
  • 4-bore, 1.75" per bore design for strong EFI airflow response
  • Cable-actuated with 700R4-style kickdown provision
  • IAC, TPS & MAP sensor not included; cross-reference part numbers given

Important Notes

  • Does not include the IAC motor, TPS, or MAP sensor
  • Verify throttle body bore size, 4150 flange compatibility, cable bracket needs, and hood clearance before final assembly
  • Tuning may be required after installation depending on your specific EFI setup
Throttle Body Style:
Multi-port injection, MPI
Airflow Rate (cfm):
1,000 cfm
Venturi Quantity:
4
TPS Sensor Included:
No
IAC Motor Included:
Yes
Gaskets Included:
Yes
Hardware Included:
Yes
Injectors Included:
No
Throttle Body Material:
Billet aluminum
Throttle Body Finish:
Natural
Quantity:
Sold individually.

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