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You might refer to the following files to help determine which Marineland Magnum filter part you need:
arrow (1K) Marineland Magnum 220/350 Parts Diagram
arrow (1K) Marineland Magnum 220/350 Owner's Manual
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Magnum Outlet w/ Diffuser, Fits All Magnum Models
Magnum Outlet w/ Diffuser, Fits All Magnum Models
Our Price: $7.49 In Stock

Replacement Magnum Outlet w/ Diffuser (Part #PR1401). Fits all models of Magnum filters.
Marineland Eclipse 3 BIO-Wheel Assembly
Marineland Eclipse 3 & Magnum Replacement BIO-Wheel Assembly
Our Price: $9.95 In Stock

The Marineland Eclipse 3, Magnum Pro 350,  H.O.T. Magnum & H.O.T. Magnum Pro Replacement BIO-Wheel Assembly (Part #PR2002, Model PFE3)
Marineland HOT Magnum Replacement Core for Micron Cartridge
Marineland HOT Magnum Replacement Core for Micron Cartridge
Our Price: $7.99 In Stock

Replacement Marineland HOT Magnum Core for Micron Cartridge (Part #PR1420). Fits both models of HOT Magnum Filters.
Marineland Magnum 220, 350 and 350 Deluxe Impeller
Marineland Magnum 220, 350 and 350 Deluxe Impeller Housing
Our Price: $6.99 In Stock

The Impeller Housing Replacement for the Marineland Magnum 220, 350 and 350 Deluxe (Part #PR1474).
Marineland Magnum Replacement O-Ring
Marineland Magnum 220, 350 and 350 Deluxe Replacement O-Ring
Our Price: $4.95 In Stock

O-Ring Replacement for the Marineland Magnum 220, 350 and 350 Deluxe. Magnum Part #PR1413.
Marineland Magnum 220  350 Deluxe Rubber Gasket
Marineland Magnum 220, 350 and 350 Deluxe Rubber Gasket
Our Price: $4.95 In Stock

Deluxe Rubber Gasket Replacement for the Marineland Magnum 220, 350 and 350 Deluxe. Magnum Part #PR1414.
Marineland Magnum 350 Replacement Filter Impeller
Marineland Magnum 350 and 350 Deluxe Replacement Filter Impeller Assembly
Our Price: $5.39 In Stock

Impeller Assembly Replacement for the Marineland Magnum 350 and 350 Deluxe Filter. Magnum Part # PR1472 Impeller Shaft Assembly w/o Magnet, Model 350.
Magnum 350 and 350 Deluxe Filter Magnet Assembly
Marineland Magnum 350 and 350 Deluxe Replacement Filter Magnet Assembly
Our Price: $28.19 In Stock

Filter Magnet Assembly Replacement for the Marineland Magnum 350 and 350 Deluxe. Magnum Part # PR1470 Magnet Assembly, Model 350.
Marineland Magnum Filter Bonded Filter Sleeve
Marineland Magnum Bonded Filter Sleeve, 1-Pack
Our Price: $3.95 In Stock

Replacement Bonded Filter Sleeve for all Magnum 350 Canister Filters.

  • Rite-Size V floss sleeve
  • 1-Pack
  • For best results, change sleeve monthly
Marineland Bonded Filter Sleeve Magnum 3-Pack
Marineland Magnum Bonded Filter Sleeve, 3-Pack
Our Price: $10.49 In Stock

Replacement Bonded Filter Sleeve for all Magnum 350 Canister Filters.

  • Rite-Size V floss sleeve
  • 3-Pack
  • For best results, change sleeve monthly
Marineland Magnum Carbon Container
Marineland Magnum Carbon Container
Our Price: $9.95 In Stock

Marineland Magnum Carbon Container. For Use with carbon and other media in the Magnum 220 and 350.
Marineland Intake Tube For Magnum Filter
Marineland Magnum Filter Intake Tube and Strainer
Our Price: $7.49 In Stock

The replacement Magnum Filter Intake Tube and Strainer (Part #PR1402). Fits all models of Magnum filters.
Magnum Micron Cartridge Water Polishing Filter
Marineland Magnum Filter Micron Cartridge Water Polishing Filter
Our Price: $9.95 In Stock

Marineland Magnum Filter Micron Cartridge Water Polishing Filter. For use with MAGNUM Models 220 and 350 and H.O.T. MAGNUM 250.
Magnum Quick Disconnect Replacement O-Ring
Marineland Magnum Quick Disconnect Replacement O-Ring
Our Price: $3.45 In Stock

Magnum Part # PR1450 O-Ring (Magnum Quick Disconnect Valve)
Marineland Magnum Replacement Canister Cover with Intake Diffuser
Marineland Magnum Replacement Canister Cover with Intake Diffuser
Our Price: $17.79 In Stock

Replacement Marineland Magnum Canister Cover with Intake Diffuser (Part #PR1412). Fits all models of Magnum Filters.
Marineland Magnum Replacement Clip & Pin Set
Marineland Magnum Replacement Clip & Pin Set
Our Price: $6.79 In Stock

Replacement Marineland Magnum Clip & Pin Set with 4 sets of clips & pins (Part #PR1437). Fits all models of Magnum Filters.
Marineland Magnum Replacement Impeller Exhaust Tube
Marineland Magnum Replacement Impeller Exhaust Tube
Our Price: $4.99 In Stock

Replacement Marineland Magnum Impeller Exhaust Tube (Part #PR1430). Fits all models of Magnum Filters.
Marineland Magnum Replacement Sealed Motor & Switch Assembly
Marineland Magnum Replacement Sealed Motor & Switch Assembly
Our Price: $63.99 In Stock

Replacement Marineland Magnum Sealed Motor & Switch Assembly (Part #PR1477). Fits all models of Magnum Filters.
Marineland Magnum Replacement Tube Retainer Bracket with Bow
Marineland Magnum Replacement Tube Retainer Bracket with Bow
Our Price: $8.79 In Stock

Replacement Marineland Magnum Tube Retainer Bracket with Bow (Part #PR1404). Fits all models of Magnum Filters.
Marineland Marineland Magnum Replacement Stabilizer Leg
Marineland Marineland Magnum Replacement Stabilizer Leg
Our Price: $5.09 In Stock

Replacement Marineland Magnum Stabilizer Leg (Part #PR1479). Fits all models of Magnum Filters.