![[IC-4KCAP] IceCap 3K/4K Directional Cage End Cap](/web/image/product.image/3342/image_1024/%5BIC-4KCAP%5D%20IceCap%203K-4K%20Directional%20Cage%20End%20Cap?unique=82c1412)
![[IC-4KCAP] IceCap 3K/4K Directional Cage End Cap](/web/image/product.image/3342/image_128/%5BIC-4KCAP%5D%20IceCap%203K-4K%20Directional%20Cage%20End%20Cap?unique=82c1412)
IceCap 3K/4K Directional Cage End Cap
SKU: IC-4KCAP
- Direct OEM Replacement: Genuine factory replacement end cap engineered specifically for IceCap 3K and 4K Gyre Flow Pump directional cages.
- Secures Shaft & Bushings: Houses the internal rubber shaft bushing to maintain proper ceramic rotor alignment and prevent rattle.
- Locks Directional Flow Cage: Snaps securely onto the outer rim of the directional flow cage to hold the entire propeller assembly together.
- Durable ABS Construction: Manufactured from high-density, saltwater-safe black ABS plastic built to withstand continuous submerged operation.
- Quick Snap-Fit Installation: Allows fast, tool-free removal and installation during routine propeller and shaft maintenance.
IceCap
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IceCap 3K/4K Directional Cage End Cap
Maintaining optimal water movement and whisper-quiet operation in your reef tank requires all structural components of your gyre pump to remain intact. The IceCap 3K/4K Directional Cage End Cap (SKU: IC-GP4K-ENDCAP) is the official OEM replacement cap designed for the outer ends of both IceCap 3K and IceCap 4K Gyre Flow Pumps. Plastic locking tabs can wear out or snap over years of routine cleaning, leading to loose cages, misaligned rotor shafts, and excessive motor noise.
This replacement end cap snaps onto the outer edge of the directional cage, locking the cage assembly together and serving as the outer seat for the rubber motor shaft bushing. By holding the ceramic shaft firmly in place, it prevents propeller wobble and maintains smooth, continuous gyre flow across your aquarium.
Essential Spare Component
End caps are frequently removed during monthly pump maintenance to slide propellers off for vinegar baths. Having a spare end cap on hand ensures that cracked clips or lost parts won't leave your aquarium without circulation.
(Note: Sold individually as (1) replacement directional cage end cap).
What’s Included:
(1) IceCap 3K/4K Replacement Directional Cage End Cap
Technical Specs:
SKU / Factory Part Identifier: IC-GP4K-ENDCAP
Material: Saltwater-Safe Molded Black ABS Plastic
Color: OEM Standard Black
Quantity: 1 End Cap
Primary Compatibility: IceCap 3K Gyre Pump, IceCap 4K Gyre Pump
Installation & Replacement Guidelines:
Disconnect power to the IceCap 3K or 4K Gyre Pump controller and remove the pump unit from your aquarium.
Twist and gently pull the damaged or worn outer end cap away from the directional cage shroud.
Ensure the rubber motor bushing is seated properly inside the central recess of the new end cap.
Align the locking notches of the new IC-GP4K-ENDCAP with the directional cage rim and press firmly until it snaps into place.
Verify that the ceramic rotor shaft spins smoothly without friction before reinstalling the pump into your tank.
Pro Tips:
Check Rubber Bushing Placement. When replacing an end cap, always verify that the small rubber shaft bushing is transferred from the old cap into the internal recess of the new cap. Operating the pump without this rubber bushing seated in the end cap causes severe rotor noise and rapid ceramic shaft wear.
Gently Press Locking Tabs. When removing end caps for routine cleaning, apply gentle, even pressure around the rim rather than twisting aggressively. This prevents stress fractures on the plastic locking clips, extending the lifespan of your pump cages.