NEW HiBlow HP-100/HP-120 Septic Air Pump Repair Kit Includes a set of 2 diaphragms, 4 air valves, mounting blocks, heads, and black safety screw. **It is highly recommended that if you replace the diaphragms that you also replace the heads and air valves included with this set.** INCLUDES FREE FILTER! SALE - FREE Filter ($5.95 value) with the purchase of this item. FREE SHIPPING! $139.50 per set The filter is a very important part of your pump and should be cleaned every 6 months and replaced every year. Because of the importance of this element, we are giving you a FREE filter with this kit! Email Us with any questions or comments or call us toll free at 1-877-925-5132. ORDERS ARE SHIPPED VIA UPS GROUND AND ARE FULLY INSURED AND TRACKED!