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Air and Fuel› Intake Manifolds and Components
FAST
LSXrt 102 Intake LS 4.8, 5.3, 6.0 Truck
SKU: F003 146602B
Moderate — 2–4 hours
Overview
The intake is constructed from a proprietary precision injection molded polymer, offering lighter weight, greater strength, and lower heat soak propensity. It has a 102mm air inlet compatible with FAST Big Mouth 102mm Throttle Bodies, as well as stock 90mm or aftermarket 92mm throttle bodies (adapter needed for 78mm three-bolt throttle bodies). Integrated nitrous bungs and a precise bolt-on fit allow for the use of factory accessories and OEM fuel/emission connections without adjustments.
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Part #: 146602B
The LSXRT is constructed from a proprietary precision injection
Features:
- Modular design allows for fast and easy disassembly
- Removable runners allow for porting
- Include integrated nitrous bungs
- Permits the use of factory accessories and OEM fuel/emission connections without adjustments or clearance issues.
- Designed for use with FAST 102mm Big Mouth Throttle Body
- 102mm inlet works w/ OEM electronic 78/90mm or aftermarket 90/92mm throttle bodies for high flow and minimal restriction (three-bolt electronic throttle bodies require an adapter)
- Advanced polymer material is strong, lightweight and cools intake charge for enhanced power
- Big gains in rear-wheel HP yet retains factory fitments and underhood clearance requirements
The FAST LSX 102mm Intake Manifold for GM 4.8, 5.3 and 6.0 truck engines provides bolt-on performance gains without any loss in bottom-end drivability.This manifold features our standard design runners for use in mild street applications.
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Vehicle Symptoms
- Engine lacks power and throttle response
- Poor acceleration at high RPM
- Low-end torque feels restricted
- Check engine light with misfire codes
Diagnostic Codes
- P0101 – Mass or Volume Air Flow Ckt Range/Perf
- P0106 – Manifold Absolute Press/Barometric Press Range/Perf
- P0113 – Intake Air Temp Snsr 1 Ckt High In
- P0171 – FT Malf (B1)
- P0300 – Random or multiple cylinder misfire Det
Relevant Conversations
- LS engine air intake restriction causes loss of power
- P0106 MAF code after cam swap help
- Best intake manifold for LS1 cathedral port 25hp gain
- FAST LSXRT vs stock truck intake dyno comparison
- Will FAST 102mm manifold fit under stock hood
- Engine surging and P0171 lean code after mods
- How to port a FAST LSXRT intake manifold
- LS6 intake vs LSXRT 102mm for 5.3L truck
- Where to install nitrous bungs on FAST manifold
- LS1 idle misfire after intake swap fix
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | FAST |
| Part Number | F003 146602B |
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