INTAKE MANIFOLD, LSXhr, LS3, 103mm, BLACK POLYMER RECTANGULAR PORT (146106)
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Compatibility
- Platform
- LS/LT
- Vehicle-specific fitment
- Review application details below
- Need help?
- Confirm fitment with us before ordering — (714) 202-7886
We list the engine platform a part is built for. That is not year-and-trim application data, so it does not confirm a fit on your specific vehicle.
- Est. install labor: 6.0 hrs — $750 at $125/hr. Pick Install at HRC and a 20% labor deposit ($150) is due at checkout; the balance is due at completion.
- An estimate for a stock vehicle, not a quote — we confirm it in writing when you book, before any labor is authorized. Seized hardware, prior modifications, diagnosis and machine work are quoted separately; tuning is arranged through our tuning partner. Questions: (714) 202-7886.
- Warranty & track disclaimer — read before you race it.
- Shipping & returns — rates and RMA terms.
- Installed in-house in Huntington Beach, CA — labor & service policy.
- Affirm and PayPal available at checkout.
More ways to pay at checkout
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.
- See 146204 for LS7 manifold.
| Part Type | Engine Intake Manifold |
|---|---|
| C.A.R.B. Exempt? | No |
| C.A.R.B. EO Number | N/A |
| Title | LSXHR 103mm Intake Manifold for Rectangular Port LS3 |
| Weight | 24 lb |
| UPC | 00036584395638 |
| Country of Origin | USA |
Verified fitment · 113 applications
- Cadillac Escalade 6.2L (2007–2016)
- Cadillac Escalade ESV 6.2L (2007–2016)
- Cadillac Escalade EXT 6.2L (2007–2013)
- Chevrolet Avalanche 6.0L (2007–2009)
- Chevrolet Camaro 6.2L (2010–2015)
- Chevrolet Corvette 6.2L (2008–2013)
- Chevrolet SS 6.2L (2014–2017)
- Chevrolet Silverado 1500 6.0L (2007–2009)
- Chevrolet Silverado 1500 6.2L (2009–2013)
- Chevrolet Suburban 1500 6.0L (2007–2009)
- Chevrolet Tahoe 6.2L (2008–2009)
- GMC Sierra 1500 6.0L (2007–2009)
- GMC Sierra 1500 6.2L (2007–2013)
- GMC Sierra 6.2L (2008–2016)
- GMC Yukon 6.2L (2007–2014)
- GMC Yukon XL 1500 6.0L (2007–2009)
- GMC Yukon XL 1500 6.2L (2007–2014)
- Hummer H2 6.2L (2008–2009)
- Pontiac G8 6.0L (2008–2009)
- Pontiac G8 6.2L (2009)
| Part No. | 146106 |
|---|---|
| Brand | FAST |
| Part Type | Engine Intake Manifold |
| Weight | 24 lb |
| UPC | 00036584395638 |
| Country of Origin | USA |
Platform-level fitment (Ford + GM, Phase 1). We publish the engine platform a part is built for — not year-and-trim application data — so nothing here confirms a fit on a specific vehicle. Confirm fitment with us before ordering: (714) 202-7886.
Commonly Needed With This
Parts builders usually buy alongside this one — gaskets, seals and hardware for the install. These are suggestions, not a verified fit: call (714) 202-7886 to confirm before ordering.
