aFe Jeep Wrangler JK 3.6L Pro DRY S Intake

Momentum GT intake for the specified 3.6L V6 configuration

aFe 51-76212 Momentum GT fits the specified 2012–2018 Wrangler JK naturally aspirated 3.6L gasoline V6. This version uses one oil-free three-layer synthetic Pro DRY S filter with a black XLPE sight-window housing and a roto-molded resonance-chamber tube.

Key Features

• One Pro DRY S filter, service number 21-91125; keep its three-layer synthetic media oil-free.
• Black XLPE sealed housing with inspection window and auxiliary inlet.
• Roto-molded tube with resonance chamber and silicone bellows coupling; housing resin is not a separate tube-resin certification.
• Reuses the original temperature sensor and installs the listed short crankcase-vent hose; no new MAF sensor is included.
• Current dry-page filter height is eight inches while the oiled page says nine; verify the actual service filter rather than borrowing another media version's dimension.

Fitment

2012–2017 Wrangler and separately named 2018 Wrangler JK with the naturally aspirated 3.6L gasoline V6. The 2018 JL is a different generation. Named rows require the actual engine, sensor, vent, housing and mounting configuration. Original named-trim boundaries and gaps are retained unless the exact-part table supports a specific correction; generic body names do not approve additional trims.

Verify 51-76212 against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.

Specifications

What's Included

The manual's final step says to tighten four clamps, while the BOM separately lists three T-bolt clamps. Confirm the actual filter/housing clamp arrangement and supplied revision; do not count an additional new clamp solely from that sentence. The original temperature sensor, tube mounting bolts, metal sleeves and rubber grommets are transferred from the vehicle. The BOM's fuel-hose label refers to the hose used for the crankcase vent, not a fuel-line change.

About aFe Power

aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.

Related Parts

• Manufacturer product specifications for 51-76212
• Exact illustrated installation manual
• Manufacturer-linked dyno; read the test configuration and media qualification
• Shop the complete aFe Power collection

Frequently Asked Questions

No. This is the JK 3.6L naturally aspirated system. The table separately names 2018 Wrangler JK to avoid mixing the two generations.

One Pro DRY S filter, 21-91125. Its three synthetic layers are oil-free; do not apply filter oil. Other elements pictured in the shared manual are alternative kits, not extra supplied filters.

The exact manufacturer page identifies the black housing as cross-linked polyethylene. It describes the tube as roto-molded with a resonance chamber without separately establishing its resin.

The exact manual identifies 21-91125. The dry product page describes an eight-inch element and the oiled page a nine-inch element. Verify the actual physical filter label and service revision rather than substituting another medium by nominal height alone.

The intake-air-temperature sensor, tube mounting bolts, metal sleeves and rubber mounting grommets. The sensor locks into the supplied adaptor; a new MAF sensor is not listed.

The coolant overflow line runs above the fan shroud and just below the tube mounting tabs. The new short hose reconnects the crankcase vent between the intake tube and original hard tube.

Current product page claims 13 HP / 12 lb-ft maximum gains. Both linked charts actually identify the oiled version with OE exhaust, 35-inch tires, second gear, 10% preload and blade fan. Marked point gains are about 12.6 HP / 11.9 lb-ft; peak-to-peak changes are 2.7 HP / 10.9 lb-ft. No separate dry-media dyno result is established.

Confirm the actual clamp arrangement, sensor lock, hose connections and clearances. Reinstall the engine cover, recheck after approximately 100–200 miles and use the correct EO label for the applicable vehicle.

Installation Instructions

Verify aFe 51-76212. Cool the engine and disconnect the negative battery terminal. Remove the engine cover, two original tube bolts, temperature-sensor connector and original short crankcase-vent hose, then lift out the old intake assembly. Release the sensor's small lock, twist about 45 degrees counterclockwise and pull straight out. Fit the filter into the new housing and seat the housing in the original mounting grommets. Install the new grommet and adaptor in the tube and lock the original temperature sensor into the adaptor. Transfer the original metal sleeves and rubber tube grommets. Assemble the silicone bellows coupling and matched clamps, route the coolant overflow line above the fan shroud and just below the new tube mounting tabs, reconnect the sensor and install the replacement crankcase-vent hose. Secure the tube with the two retained bolts, tighten connections, reinstall the cover and recheck after approximately 100–200 miles. No numeric torque is specified.

Important Disclosures

Use the exact illustrated manual and actual boxed revision. Official indexed D-550-50 names this kit for 2012–2018 Wrangler 3.6L naturally aspirated; verify the complete applicable EO conditions and identification label before inspection. The indexed exhibit was read; the complete current signed PDF and independent revocation status were not established. Current product page claims 13 HP / 12 lb-ft maximum gains. Both linked charts actually identify the oiled version with OE exhaust, 35-inch tires, second gear, 10% preload and blade fan. Marked point gains are about 12.6 HP / 11.9 lb-ft; peak-to-peak changes are 2.7 HP / 10.9 lb-ft. No separate dry-media dyno result is established. No guaranteed power, fuel-economy, fault-code or warranty outcome is promised.

California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.