Best Intake Manifold For 5 3: LS Options Compared

#1 · Best Overall

1. FAST LSXrt 102mm

• Weight: 21.8 lb

Best for: Modular Truck-Porting Builds.

Why it ranks #1: Designed for GM 4.8L, 5.3L, and 6.0L cathedral-port truck engines; its 102mm inlet accepts 90mm, 92mm, or 102mm throttle bodies.

Removable runners give the FAST LSXrt 102mm a practical advantage for buyers who want to disassemble and port the manifold rather than treat it as a sealed assembly. It is specified for 4.8L, 5.3L, and 6.0L cathedral-port truck engines, with appropriate cowl clearance required.

The 102mm inlet works with 90mm, 92mm, or 102mm throttle bodies, giving buyers multiple stated throttle-body sizes to work around. Its multi-layer modular construction allows runner removal for disassembly and porting, which can make custom airflow work more accessible. FAST specifies a lightweight polymer that cools the intake charge, and notes a 25 peak-horsepower gain over stock on a stock 6.0L with a Big Mouth 102mm throttle body; that result is tied to that configuration.

Skip it if you have limited cowl clearance; the GM Genuine Parts 55570283 is an OE replacement option rather than this taller performance-style truck manifold.

The FAST LSXrt suits a 4.8L, 5.3L, or 6.0L cathedral-port truck builder planning throttle-body matching or runner porting. Confirm the vehicle has appropriate cowl clearance, since the application specifically flags that boundary.

Listed on Amazon as: LSXrt 102mm Intake Manifold for GM LS 4.8/5.3/6.0L Truck with Cathedral Port Heads

#2 · Best Bundled Kit

2. YESHMA LS Intake Kit

• Weight: 20.5 lb
• Package Dimensions: 23.5 x 15.6 x 10.6 in

Best for: Bundled Fabricated LS Hardware.

Why it ranks #2: Lists 5.3L among supported engines and includes a 102mm throttle body and fuel rails, reducing the need to source those components separately.

A 102mm throttle body, fuel rails, TPS, and IAC are listed with this YESHMA fabricated-aluminum manifold, reducing the need to source those named components separately. Its stated 4.8L, 5.3L, 6.0L, and 6.2L engine families give a broad LS-based application range to evaluate.

YESHMA lists engine codes across 4.8L, 5.3L, 6.0L, and 6.2L LS-based families, giving buyers specific applications to compare during build planning. The included 102mm throttle body, fuel rails, TPS, and IAC can consolidate several parts into the manifold package and simplify component sourcing. CNC-machined T6 aluminum alloy is the stated construction, while the listing describes a fabricated sheet-metal design; buyers should plan around that material and supplied-component configuration.

Skip it if you need explicit cathedral-port truck-engine fitment; the FAST LSXrt 102mm specifically lists 4.8L and 5.3L cathedral-port truck applications.

This YESHMA kit suits an LS builder prioritizing a bundled throttle body, fuel rails, TPS, and IAC across its listed engine families. Check head and vehicle application requirements carefully, since its supplied facts do not specify cathedral-port compatibility.

Listed on Amazon as: LS Intake Manifold with 102mm Throttle Body Throttle Position Sensors TPS IAC and Fuel Rails Compatible with Chevy 4.8 5.3 6.0 6.2 LS LS1 LS2 LS6 Sheet Metal Al Fabricated Black

#3 · Cable-Throttle Pick

3. Htostar Racing 102mm

• Weight: 20.2 lb
• Package Dimensions: 24.5 x 16 x 10.7 in

Best for: Cable-Throttle Cathedral-Port Swap.

Why it ranks #3: Specifies 4.8L and 5.3L LS engines with cathedral-port heads and a 102mm inlet, but is for cable drive only, not drive-by-wire.

A 102mm inlet paired with cathedral-port compatibility makes this Htostar Racing manifold a candidate for 4.8L and 5.3L LS builds seeking a larger throttle-body opening. Its cable-drive-only configuration narrows the fit, so it suits buyers whose engine and throttle setup match those specified rather than drive-by-wire applications.

The listing identifies compatibility with cathedral-port LS-based engines, including original 4.8L and 5.3L engines, giving those owners a defined starting point for application checks. A 102mm inlet provides the specified opening for a matching throttle body, while the 210mm height is a useful clearance dimension to consider during planning. The manifold is specified for a four-bolt, cable-drive intake, so the throttle arrangement is central to installation compatibility; it is not listed for drive-by-wire.

Skip it if you use drive-by-wire; the FAST LSXrt 102mm is listed for cathedral-port LS applications without this cable-only restriction.

This Htostar Racing option fits a buyer checking a cathedral-port 4.8L or 5.3L LS build with cable throttle and room for its 210mm height. Its four-bolt cable-drive limitation rules out drive-by-wire setups.

Listed on Amazon as: For LS Intake Manifold Compatible with LS1 LS2 LS6 of cathedral port heads with Drive by Cable Throttle Body Compatible with Chevy Cadillac Pontiac Aluminum (102mm)

#4

4. POSENG 102mm Kit

• Weight: 9.23 kg

Best for: 102mm Cable-Throttle Kit.

Why it ranks #4: Lists 5.3L LS applications and a 102mm throttle-body kit; its fitment information limits the manifold to cable-drive setups, not drive-by-wire.

A listed 102mm throttle-body kit with TPS gives this POSENG manifold a bundled direction for LS buyers who want the inlet and throttle components together. Its stated 4.8L, 5.3L, and other LS engine coverage is paired with a cable-drive-only requirement, making throttle type the key application boundary.

POSENG lists this manifold for Chevrolet small-block V8 Gen III/IV LS engines, including 4.8L and 5.3L applications, and specifies cathedral-port heads. The 102mm throttle-body kit and included TPS can consolidate those named components in one purchase, simplifying parts coordination. Compatibility is limited to a four-bolt intake with cable drive, not drive-by-wire, so buyers should match the throttle setup before planning installation. The listed black finish identifies the supplied configuration.

Skip it if you need a drive-by-wire intake; the YESHMA 102mm manifold kit lists several LS engine families without this stated cable-only restriction.

Choose this POSENG kit when your cathedral-port LS application uses cable throttle and you want the listed 102mm throttle body and TPS together. The four-bolt cable-drive requirement is a firm boundary for installation planning.

Listed on Amazon as: Intake Manifold Compatible with Chevy 4.8 5.3 6.0 6.2 LS LS1 LS2 LS6 with 102mm Throttle Body Kits HTRACING

#5 · Smaller Inlet Option

5. POSENG Silver 92mm

• Weight: 16.81 lb
• Package Dimensions: 23.2 x 13.9 x 9.9 in

Best for: 92mm Injector-Conscious LS Swap.

Why it ranks #5: Supports 5.3L cathedral-port LS engines with a 92mm inlet, but its injector information says other than LS1/LS6 injectors may need bracket changes or spacers.

A 92mm inlet distinguishes this silver POSENG manifold from larger-opening options, while its listed engine range includes 4.8L and 5.3L cathedral-port LS variants. The injector note also makes it a more specific planning choice: LS1/LS6 injectors are listed, while other injectors may need mounting changes or spacers.

The compatibility list names 4.8L and 5.3L engines along with LR4, L33, L59, and LM7, giving swap planners concrete engine references to compare. Its 92mm inlet sets the throttle-body opening, so it is suited to builds configured around that size rather than a 102mm inlet. POSENG specifies LS1/LS6 injectors; other injectors may require bracket drilling or spacers, a detail that affects parts preparation and installation workflow.

Skip it if you want a removable-runner manifold for porting; the FAST LSXrt 102mm has a modular, disassemblable design.

This POSENG version suits a cathedral-port 4.8L or 5.3L build targeting a 92mm inlet and LS1/LS6 injectors. If using other injectors, account for the stated bracket modification or spacer requirement before installation.

Listed on Amazon as: Intake Manifold for LS Cathedral Port Heads for LS1 LS2 LS6 LS Engines Compatible with Chevy 4.8 5.3 5.7 6.0 HTRACING (Silver 92MM)

#6

6. GM Genuine Parts 55570283

• Weight: 10.05 lb

Best for: GM OE-Style Replacement Service.

Why it ranks #6: Offers a GM OE-specification replacement with injector and fuel rail, but the supplied listing does not specifically identify 5.3L or LS fitment.

GM OE validation is the defining feature of this Genuine Parts intake manifold kit, positioning it for repair buyers seeking a factory-style replacement rather than a specified performance upgrade. The kit title includes a multi-port fuel injector and fuel rail, and GM describes the manifold’s role in distributing the combustion mixture to intake ports.

GM states that the manifold distributes the combustion mixture to each cylinder-head intake port, or air in a direct-injection system, supporting the engine’s intake function. Its OE specification for fit, form, and function and GM validation make it a reference point for buyers maintaining a compatible GM vehicle. The title lists a multi-port fuel injector and fuel rail in the kit, which can keep those named parts together for a replacement workflow; the supplied facts do not identify 5.3L-specific application coverage.

Skip it if you need a named 5.3L cathedral-port performance manifold; the FAST LSXrt 102mm explicitly lists 5.3L truck applications.

This GM Genuine Parts kit suits a buyer servicing a compatible GM vehicle and seeking an OE-validated intake replacement with a fuel injector and rail listed. It is not the choice for a specifically documented 5.3L performance application.

Listed on Amazon as: GM Genuine Parts 55570283 Intake Manifold Kit with Multi-Port Fuel Injector and Fuel Rail