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FAST LSX Manifold 103MM Gen III LS Rectangular Port - Black

SKU: FST146106

Intake Manifolds, Fuel Injected

FST Intake Manifolds

FAST LSX Manifold 103MM Gen III LS Rectangular Port - Black

SKU: FST146106

Intake Manifolds, Fuel Injected

FST Intake Manifolds

A$2,851.33
IN STOCK! Est Ship 3-5 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

FAST has developed the industry’s first polymer tunnel ram-style intake manifold, ideal for generating maximum power in boosted and naturally aspirated engines. Available for rectangular port LS3 and raised rectangular port LS7 engines, the FAST LSXHR FAST-RAM Intake Manifold features removable stacks of various lengths, so racers can experiment with finding which combination makes the most power in their application. Its polymer construction is not only lightweight and high strength, but also virtually eliminates power-robbing heat soak that occurs with commonly available aluminum intake manifolds. Testing has shown an average 30-horsepower gain between 5,000 and 7,500 RPM over competitor tunnel ram intake manifolds. The FAST LSXHR FAST-RAM Intake Manifold is designed specifically with boosted applications in mind and is rated for up to 45psi of continuous pressure. Compound fuel injector angle aims the spray pattern for ideal atomization, resulting in maximum power production and superior drivability. A reversible top allows for forward- or firewall-facing throttle body installations. The intake manifold also features two nitrous nozzle bosses per runner for clean and easy direct port system installations. Its 103mm throttle body opening can be port matched to 105mm.

Product Overview

FAST has developed the industry's first polymer tunnel ram-style intake manifold, ideal for generating maximum power in boosted and naturally aspirated engines. Available for rectangular port LS3 and raised rectangular port LS7 engines, the FAST LSXHR FAST-RAM Intake Manifold features removable stacks of various lengths, so racers can experiment with finding which combination makes the most power in their application. Its polymer construction is not only lightweight and high strength, but also virtually eliminates power-robbing heat soak that occurs with commonly available aluminum intake manifolds. Testing has shown an average 30-horsepower gain between 5,000 and 7,500 RPM over competitor tunnel ram intake manifolds. The FAST LSXHR FAST-RAM Intake Manifold is designed specifically with boosted applications in mind and is rated for up to 45psi of continuous pressure. Compound fuel injector angle aims the spray pattern for ideal atomization, resulting in maximum power production and superior drivability. A reversible top allows for forward- or firewall-facing throttle body installations. The intake manifold also features two nitrous nozzle bosses per runner for clean and easy direct port system installations. Its 103mm throttle body opening can be port matched to 105mm.

Product Details

Year Make
C.A.R.B. EO Number:N/A
C.A.R.B. Exempt?:No
Description:LSXHR 103mm Intake Manifold for Rectangular Port LS3
Part Number:fst146106
Title:LSXHR 103mm Intake Manifold for Rectangular Port LS3

Part Type

Engine Intake Manifold

Data: v4.2 - Upd: 2026-10-01 00:31:19

Specifications

Product Attributes - EGR
No
Product Attributes - UPC
00036584395638
Product Attributes - Brand
FAST
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Part Type
Intake Manifolds, Fuel Injected
Product Attributes - Base Color
Black
Product Attributes - Product Line
FAST LSXHR Intake Manifolds
Product Attributes - Base Material
Polymer
Product Attributes - Plenum Finish
Black
Product Attributes - Plenum Material
Polymer
Product Attributes - Runners Included
Yes
Product Attributes - Runners Removable
Yes
Product Attributes - Injectors Included
No
Product Attributes - Fuel Injection Style
Multi-port
Product Attributes - Throttle Body Included
No
Product Attributes - Intake Section Included
Complete
Product Attributes - Throttle Body Bore Size
103mm
Product Attributes - Engine Block Deck Height
Standard deck
Product Attributes - Basic Operating RPM Range
5,000-7,500
Product Attributes - Manufacturer's Part Number
146106
Product Attributes - Supplemental Boss Quantity
Sixteen
Product Attributes - Cylinder Head Configuration
Rectangular Port LS3/L76/L92/L99
Product Attributes - Supplemental Bosses Cast-In
No
Product Attributes - Supplemental Bosses Machined
Yes
Product Attributes - Aftermarket Fuel Rail Required
No
Product Attributes - Multi-Port Fuel Rails Included
Yes

Reference Information

Brand Name/s Fast
StreetFX SKU fst146106
SFX Item ID 4084502
Supplier Item Code 4084502
Manufacturer SKU 146106
Manufacturer UPC 36584395638
Alternative References 103MM

Brochures

Compatibility

Application Data
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2007
    CC6162
    CID376
    Ending Year2008
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN Code8
    Liter6.2
    MakeCADILLAC
    ModelESCALADE
    SubmodelBASE
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2009
    CC6162
    CID376
    Ending Year2009
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN Code2
    Liter6.2
    MakeCADILLAC
    ModelESCALADE
    SubmodelBASE
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2010
    CC6162
    CID376
    Ending Year2014
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN CodeF
    Liter6.2
    MakeCADILLAC
    ModelESCALADE
    SubmodelBASE
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2007
    CC6162
    CID376
    Ending Year2008
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN Code8
    Liter6.2
    MakeCADILLAC
    ModelESCALADE ESV
    SubmodelBASE
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2009
    CC6162
    CID376
    Ending Year2009
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN Code2
    Liter6.2
    MakeCADILLAC
    ModelESCALADE ESV
    SubmodelBASE
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2010
    CC6162
    CID376
    Ending Year2014
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN CodeF
    Liter6.2
    MakeCADILLAC
    ModelESCALADE ESV
    SubmodelBASE
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2011
    CC6162
    CID376
    Ending Year2014
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN CodeF
    Liter6.2
    MakeCADILLAC
    ModelESCALADE ESV
    SubmodelLUXURY
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2008
    CC6162
    CID376
    Ending Year2008
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN Code8
    Liter6.2
    MakeCADILLAC
    ModelESCALADE ESV
    SubmodelPLATINUM
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2009
    CC6162
    CID376
    Ending Year2009
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN Code2
    Liter6.2
    MakeCADILLAC
    ModelESCALADE ESV
    SubmodelPLATINUM
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2010
    CC6162
    CID376
    Ending Year2014
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN CodeF
    Liter6.2
    MakeCADILLAC
    ModelESCALADE ESV
    SubmodelPLATINUM
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2011
    CC6162
    CID376
    Ending Year2014
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN CodeF
    Liter6.2
    MakeCADILLAC
    ModelESCALADE ESV
    SubmodelPREMIUM
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2007
    CC6162
    CID376
    Ending Year2008
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN Code8
    Liter6.2
    MakeCADILLAC
    ModelESCALADE EXT
    SubmodelBASE
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2009
    CC6162
    CID376
    Ending Year2009
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN Code2
    Liter6.2
    MakeCADILLAC
    ModelESCALADE EXT
    SubmodelBASE
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2010
    CC6162
    CID376
    Ending Year2013
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN CodeF
    Liter6.2
    MakeCADILLAC
    ModelESCALADE EXT
    SubmodelBASE
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2011
    CC6162
    CID376
    Ending Year2013
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN CodeF
    Liter6.2
    MakeCADILLAC
    ModelESCALADE EXT
    SubmodelLUXURY
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2011
    CC6162
    CID376
    Ending Year2013
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN CodeF
    Liter6.2
    MakeCADILLAC
    ModelESCALADE EXT
    SubmodelPREMIUM
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2011
    CC6162
    CID376
    Ending Year2014
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN CodeF
    Liter6.2
    MakeCADILLAC
    ModelESCALADE
    SubmodelLUXURY
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2008
    CC6162
    CID376
    Ending Year2008
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN Code8
    Liter6.2
    MakeCADILLAC
    ModelESCALADE
    SubmodelPLATINUM
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2009
    CC6162
    CID376
    Ending Year2009
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN Code2
    Liter6.2
    MakeCADILLAC
    ModelESCALADE
    SubmodelPLATINUM
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2010
    CC6162
    CID376
    Ending Year2014
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN CodeF
    Liter6.2
    MakeCADILLAC
    ModelESCALADE
    SubmodelPLATINUM
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2011
    CC6162
    CID376
    Ending Year2014
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    Engine VIN CodeF
    Liter6.2
    MakeCADILLAC
    ModelESCALADE
    SubmodelPREMIUM
  • Beginning Year2005
    Ending Year2019
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Engine TypeV8
    MakeCHEVROLET
  • Beginning Year2008
    Ending Year2017
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2007
    CC5967
    CID364
    Ending Year2009
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Engine TypeV8
    Engine VIN CodeY
    Liter6.0
    MakeCHEVROLET
    ModelAVALANCHE
    SubmodelLT
  • Application NotesEngine Manufacturer: General Motors
    Beginning Year2007
    CC5967
    CID364
    Ending Year2009
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Engine TypeV8
    Engine VIN CodeY
    Liter6.0
    MakeCHEVROLET
    ModelAVALANCHE
    SubmodelLTZ

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