FAST LSX Manifold 92MM Inlet - Black fast,fst54039b,54039b,036584255697,fst,intake,manifolds,fst-540

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Description

Intake Manifold - LSX - 92 mm Throttle Body Flange - Cathedral Port - Multi Port - Plastic - Black - LS1 / LS2 / LS6 - GM LS-Series - Each

LSX92 Manifold

The patented LSX 92mm Black Intake Manifold from FAST is the only three-piece Gen

Additional Information

The FAST LSX 92mm Intake Manifold for GM LS1, LS2 and LS6 engines provides bolt-on performance gains without any loss in bottom-end drivability.

Part Type

Engine Intake Manifold

Product Overview

Replacement parts available. See 54039BUS for the upper shell. See 54039BLS for lower shell. Billet fuel rails available under 54023. Compatible throttle bodies available under 54092 and 54090.

Product Details

C.A.R.B. EO Number:	D-279-10
C.A.R.B. Exempt?:	Yes
Description:	LSX 92mm Cathedral Port Intake Manifold for GEN III LS1, LS2, LS6
Intake Port Style:	Cathedral
Part Number:	fst54039B
Title:	LSX 92mm Cathedral Port Intake Manifold for GEN III LS1, LS2, LS6

Additional Application Notes
• The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Product Downloads

#	Document Type	Download
1.	Catalog

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.1 - Upd: 2025-10-05 00:24:55

Features

Note for Australian and European Markets

Unless otherwise stated, this product may be engineered for use in Left-Hand Drive vehicles. Steering components, pedals, shifters, instrument clusters, brake boosters and some master cylinders and adjacent parts can vary between LHD and RHD configurations, but in many cases they are identical depending on the design of the vehicle and part, but may have differing mounts or bolt patterns. Carefully review the product images and details to ensure suitability for your vehicle, or contact StreetFX support if you are unsure. Returns are not accepted for special order products.

(keyword: manifold)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s	Fast, FAST ELECTRONICS
StreetFX SKU	fst54039B
SFX Item ID	4084702
Accounting SKU	fst-54039B
Manufacturer SKU	54039B
Manufacturer UPC	036584255697
Alternative References	FST-54039B

Specifications

Intake Manifold, FAST LSX, Multi-port, 92mm Bore, Polymer, Black, Runners, EGR, Chevy, 5.7L, 6.0L, Kit

These FAST LSX intake manifolds are the only 3-piece Gen III composite manifolds proven to deliver increased performance without compromising bottom-end drivability or high-rpm horsepower. They easily bolt onto GM Gen III (LS1, LS2, and LS6) engines and are designed to work with the 92mm FAST Big Mouth throttle body. The new stylish black intake manifolds deliver terrific performance right out of the box and can be ported by the customer for even more flow. As requested by previous LSX customers, the FAST LSX intake manifolds feature the added benefits of corrosion-free stainless steel assembly bolts, an improved throttle body sealing flange, and O-ring gasket and threaded insert throttle body mounts that provide increased durability.

Product Attributes
EGR	Yes
UPC	036584255697
Brand	FAST
Quantity	Sold individually.
Emissions	California EO Approved
Part Type	Intake Manifolds, Fuel Injected
Base Color	Black
Product Line	FAST LSX Intake Manifolds
Base Material	Polymer
Plenum Finish	Black
Plenum Material	Polymer
Runners Included	Yes
CARB EO Number(s)	D-279-10
Runners Removable	Yes
Injectors Included	No
Fuel Injection Style	Multi-port
Throttle Body Included	No
Intake Section Included	Complete
Throttle Body Bore Size	92mm
Engine Block Deck Height	Standard deck
Basic Operating RPM Range	1,800-6,000
Manufacturer's Part Number	54039B
Supplemental Boss Quantity	Eight
Cylinder Head Configuration	Cathedral Port LS1/LS2/LS6
Supplemental Bosses Cast-In	Yes
Supplemental Bosses Machined	No
Aftermarket Fuel Rail Required	No
Multi-Port Fuel Rails Included	No

compatibility

FAST LSX Manifold 92MM Inlet - Black
Year Range	Make	Model	Submodels	Region

2001-2004	Avanti	II	Base	US
2008-2009	Buick	LaCrosse	Super	US
2004-2007	Buick	Rainier	CXL, CXL Plus	US
2002-2005	Cadillac	Escalade	Base	US
2009-2013	Cadillac	Escalade	Hybrid, Hybrid Platinum	US
2007-2013	Chevrolet	Avalanche	LS, LT, LTZ, Black Diamond LS, Black Diamond LT, Black Diamond LTZ	US
2002-2006	Chevrolet	Avalanche 1500	Base, On Road Edition, Z71, North Face, WBH, Z66, LS, LT	US
2009-2012	Chevrolet	Colorado	LT	US
2003-2007	Chevrolet	Express 1500	Base, LS, LT	US
2003-2005	Chevrolet	Express 2500	Base, LS	US
2010-2019	Chevrolet	Express 2500	Base, LS, LT	US
2010-2019	Chevrolet	Express 3500	Base, LS, LT	US
2006-2009	Chevrolet	Impala	SS	US
2016-2017	Chevrolet	LCF 3500	Base	US
2006-2007	Chevrolet	Monte Carlo	SS	US
2003-2004	Chevrolet	SSR	Base	US
1999-2013	Chevrolet	Silverado 1500	Base, LS, LT, WT, Z71 Off-Road, Hybrid, LTZ, XFE	US
2007	Chevrolet	Silverado 1500 Classic	LS, LT, WT, Hybrid	US
1999-2000	Chevrolet	Silverado 2500	Base, LS, LT	US
2010-2019	Chevrolet	Silverado 2500 HD	LT, LTZ, WT, High Country	US
2010-2019	Chevrolet	Silverado 3500 HD	LT, LTZ, WT, High Country	US
2000-2014	Chevrolet	Suburban 1500	Base, LS, LT, Z71, LTZ	US
2010-2013	Chevrolet	Suburban 2500	LS, LT	US
2016-2019	Chevrolet	Suburban 3500 HD	LS, LT	US
2000-2014	Chevrolet	Tahoe	Base, LS, LT, Z71, LTZ, Hybrid, PPV, SSV	US
2006-2008	Chevrolet	Trailblazer	LS, LT, Base	US
2003-2006	Chevrolet	Trailblazer EXT	LS, LT, North Face	US
2009-2012	GMC	Canyon	SLE, SLT	US
2005-2009	GMC	Envoy	Denali	US
2003-2006	GMC	Envoy XL	SLE, SLT, Denali	US
2004-2005	GMC	Envoy XUV	SLE, SLT	US
2003-2007	GMC	Savana 1500	Base, SLE, LS, LT	US
2003-2005	GMC	Savana 2500	Base, SLE	US
2010-2019	GMC	Savana 2500	Base, LS, LT	US
2010-2019	GMC	Savana 3500	Base, LS, LT	US
1999-2013	GMC	Sierra 1500	SL, SLE, SLT, Base, HT, WT, Hybrid, XFE	US
2007	GMC	Sierra 1500 Classic	SL, SLE, SLT, WT, Hybrid	US
1999-2000	GMC	Sierra 2500	SL, SLE, SLT	US
2010-2019	GMC	Sierra 2500 HD	SLE, SLT, WT, Denali, Base	US
2010-2019	GMC	Sierra 3500 HD	SLE, SLT, WT, Denali, Base	US
2000-2014	GMC	Yukon	SLE, SLT, SL, Hybrid, Denali Hybrid	US
2000-2014	GMC	Yukon XL 1500	SLE, SLT, SL	US
2010-2013	GMC	Yukon XL 2500	SLE, SLT	US
2004	Hummer	H2	Base	US
2007	Hummer	H2	Base	US
2008-2010	Hummer	H3	Alpha, Championship Series	US
2009-2010	Hummer	H3T	Alpha	US
2003-2006	Isuzu	Ascender	Base, LS, Limited, S	US
2005-2008	Pontiac	Grand Prix	GXP	US
Note: Displaying first 50 entries.

Please note that this information serves as a fitment guide only. For specific fitment questions or clarifications, please contact us, as manufacturers may introduce variations and modifications during model year or regional revisions. While we strive to provide accurate data, fitment details may vary by region; therefore, compatibility outside the listed region and submodel variant cannot be guaranteed.

Detailed Compatibility

Application Data
Make	BUICK
Model	LACROSSE
Submodel	SUPER
Beginning Year	2008
Ending Year	2009
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Engine VIN Code	C

Make	BUICK
Model	RAINIER
Submodel	CXL
Beginning Year	2004
Ending Year	2004
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	P

Make	BUICK
Model	RAINIER
Submodel	CXL
Beginning Year	2005
Ending Year	2007
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	M

Make	BUICK
Model	RAINIER
Submodel	CXL PLUS
Beginning Year	2004
Ending Year	2004
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	P

Make	BUICK
Model	RAINIER
Submodel	CXL PLUS
Beginning Year	2005
Ending Year	2005
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	M

Make	CADILLAC
Model	ESCALADE
Submodel	BASE
Beginning Year	2002
Ending Year	2005
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	T

Make	CHEVROLET
Beginning Year	1997
Ending Year	2004
Engine Type	V8
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.7L/350

Make	CHEVROLET
Beginning Year	1999
Ending Year	2007
Engine Type	V8
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	6.0L/364

Make	CHEVROLET
Beginning Year	1999
Ending Year	2014
Engine Type	V8
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325

Make	CHEVROLET
Beginning Year	1999
Ending Year	2017
Engine Type	V8
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	4.8L/294

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	BASE
Beginning Year	2002
Ending Year	2005
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	T

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	BASE
Beginning Year	2005
Ending Year	2005
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	Z

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	LS
Beginning Year	2005
Ending Year	2006
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	T

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	LS
Beginning Year	2005
Ending Year	2006
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	Z

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	LT
Beginning Year	2005
Ending Year	2006
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	T

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	LT
Beginning Year	2005
Ending Year	2006
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	Z

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	NORTH FACE
Beginning Year	2002
Ending Year	2003
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	T

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	ON ROAD EDITION
Beginning Year	2002
Ending Year	2003
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	T

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	WBH
Beginning Year	2003
Ending Year	2003
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	T

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	Z66
Beginning Year	2004
Ending Year	2006
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	T

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	Z66
Beginning Year	2005
Ending Year	2006
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	Z

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	Z71
Beginning Year	2002
Ending Year	2006
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	T

Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	Z71
Beginning Year	2005
Ending Year	2006
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	Z

Make	CHEVROLET
Model	AVALANCHE
Submodel	BLACK DIAMOND LS
Beginning Year	2013
Ending Year	2013
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	0

Make	CHEVROLET
Model	AVALANCHE
Submodel	BLACK DIAMOND LS
Beginning Year	2013
Ending Year	2013
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine Size	5.3L/325
Application Notes	The use of lower profile car manifolds on trucks, vans and SUV's may require the changing of front drive accessories, throttle bodies, fuel rails and injectors.
Engine VIN Code	7

This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.