The aFe 46-20118 is the cold-side BladeRunner aluminum charge-pipe assembly for 2011–2016 Chevrolet Silverado HD and GMC Sierra HD trucks with the 6.6L LML Duramax turbo-diesel. It uses nominal 3-inch mandrel-bent aluminum with wrinkle-black powder coating, not stainless-steel tubing, and connects to the original or manufacturer-listed matching aFe intercooler.
| Years | Model | Exact engine / requirements |
|---|---|---|
| 2011–2016 | Chevrolet Silverado 2500 HD / Silverado 3500 HD | 6.6L LML Duramax turbo-diesel only; actual charge-air connections and sensor configuration |
| 2011–2016 | GMC Sierra 2500 HD / Sierra 3500 HD | 6.6L LML Duramax turbo-diesel only; actual charge-air connections and sensor configuration |
46-20118: The current primary and exact manual both cover 2011–2016 LML, rather than the older 2011–2013 title wording. The hot side uses two physical tube sections; a hot/cold combination therefore has three sections, not two. Exact retailer tables support restoring the missing Silverado 3500 HD LT and Sierra 2500 HD WT groups within the manufacturer model/engine scope. This is retailer trim detail, not manufacturer-explicit certification of every engine/body combination. No non-HD chassis extension is inferred.
| Detail | Value |
|---|---|
| Manufacturer Part Number | 46-20118 |
| Configuration | One tube, two couplings and four clamps |
| Tubing / flow path | Nominal 3-inch mandrel-bent aluminum cold tubing; stainless steel describes the clamps, not the tube |
| Finish | Wrinkle-black powder coating |
| Clamps / fastening | Cold-side exact manual: tighten until clamp spring is completely compressed. No numerical torque or mileage recheck interval is supplied; do not borrow 10 ft-lb, SmartSeal 72 in-lb or another kit interval. |
| Original sensors / seals | The cold-side original temperature sensor is reused and the airbox airflow-sensor connector is disconnected/reconnected for access. No new sensor is listed. The primary page describes one 1/8 NPT auxiliary port; the manual packing list does not itemize a new plug or injection hardware. Confirm proper closure and compatibility before use. |
| Emissions | The current exact manufacturer page and April 2016 manual state this pipe configuration is not CARB exempt and is unavailable for purchase in California or use on vehicles registered with the California DMV. |
aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.
An engine- and year-specific BladeRunner charge-pipe kit, not a complete intercooler, turbocharger or air intake.
How many tubes and which side does this kit include?is the cold-side BladeRunner aluminum charge-pipe assembly for 2011–2016 Chevrolet Silverado HD and GMC Sierra HD trucks with the 6.6L LML Duramax turbo-diesel. It uses nominal 3-inch mandrel-bent aluminum with wrinkle-black powder coating, not stainless-steel tubing, and connects to the original or manufacturer-listed matching aFe intercooler.
Are the airflow claims guaranteed horsepower gains?No. The manufacturer reports side-specific flow comparisons; actual engine power, charge temperature and boost depend on the complete setup.
Which original couplings, vent or sensor components are retained?The cold-side original temperature sensor is reused and the airbox airflow-sensor connector is disconnected/reconnected for access. No new sensor is listed. The primary page describes one 1/8 NPT auxiliary port; the manual packing list does not itemize a new plug or injection hardware. Confirm proper closure and compatibility before use.
What is the clamp torque?Cold-side exact manual: tighten until clamp spring is completely compressed. No numerical torque or mileage recheck interval is supplied; do not borrow 10 ft-lb, SmartSeal 72 in-lb or another kit interval.
Are all manual contents and installation steps consistent?The current primary and exact manual both cover 2011–2016 LML, rather than the older 2011–2013 title wording. The hot side uses two physical tube sections; a hot/cold combination therefore has three sections, not two. Exact retailer tables support restoring the missing Silverado 3500 HD LT and Sierra 2500 HD WT groups within the manufacturer model/engine scope. This is retailer trim detail, not manufacturer-explicit certification of every engine/body combination. No non-HD chassis extension is inferred.
Does a threaded port include a water/methanol system?No. An accessory port does not include or universally approve a controller, nozzle, pump, sensor or injection system. Seal unused ports as instructed.
Is this kit CARB exempt?The current exact manufacturer page and April 2016 manual state this pipe configuration is not CARB exempt and is unavailable for purchase in California or use on vehicles registered with the California DMV.
46-20118: inspect every connection and resolve the documented kit discrepancies before operation.
California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.
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