{"product_id":"castair-replacement-pump-motor-kit-g30r-15-30hp-mkg30r","title":"Castair Replacement Pump Motor Kit G30R (15-30HP) - MKG30R","description":"\u003cp\u003eThe Castair MKG30R covers the G30 air end on 15–30HP rotary screw compressors. Based on Castair''s official parts reference, MKG30R is listed in the preventative maintenance kit lineup as the PM kit for the G30 air end — same kit structure as the MKD62 and MKG11: two air filters, four oil filters, one separator filter, and five gallons of CAST-LUBE synthetic oil. Some product listings reference this part as a \"Replacement Pump Motor Kit,\" which may indicate MKG30R also covers or includes air end component replacement depending on the configuration — if your application requires a pump\/motor assembly rather than consumable filters, call 866-217-0063 to confirm exactly what is included in your order. The information here reflects Castair''s official parts table, which classifies MKG30R as the G30 PM kit.\u003c\/p\u003e\n\n\u003ch3\u003eG30 Air End — What This Kit Covers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir end designation:\u003c\/strong\u003e G30, used in Castair rotary screw compressors from 15HP through 30HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible units (confirmed models):\u003c\/strong\u003e R15312VG30 (15HP, 3-phase, 120-gallon vertical, 58 CFM), R15312HG30 (horizontal), R20312VG30 (20HP, vertical), R20312HG30 (horizontal), R25312VG30 (25HP, vertical), R25312HG30 (horizontal), R30312VG30 (30HP, vertical), R30312HG30 (horizontal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHP range:\u003c\/strong\u003e 15HP, 20HP, 25HP, and 30HP Castair rotary screw units with G30 air end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote on naming:\u003c\/strong\u003e If your documentation or SKU list shows this as a pump\/motor kit and you need confirmation of contents, call before ordering. The castair.net parts table is clear: MKG30R is the G30 PM kit in the maintenance kit lineup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy a Kit Instead of Individual Filters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e10% savings vs. individual parts:\u003c\/strong\u003e All four Castair PM kits carry a 10% discount versus buying the same filters and oil separately. On a larger 25–30HP unit with higher-volume filters, that discount represents meaningful savings per service cycle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLargest filters in the PM kit lineup:\u003c\/strong\u003e The G30 air filter (32DP, OD: 9 1\/4\") is the biggest air filter in the Castair kit range. This is a larger-format filter than the D62 (OD: 6 1\/8\") or G11 (OD: 3 7\/8\"). Ordering the kit ensures you get the correct size — the 32DP is easy to confuse if you are cross-referencing dimensions without the part number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete service interval in one shipment:\u003c\/strong\u003e Two air filters, four oil filters, one separator, and five gallons of synthetic oil. When your G30 hits service hours, pull this kit and get it done without partial-service situations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-matched components:\u003c\/strong\u003e Every part in the kit is Castair-spec for the G30 air end. No dimension guessing, no aftermarket substitutes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKit Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filters (qty 2):\u003c\/strong\u003e Part number 32DP. Paper element. ID: 5 3\/4\", OD: 9 1\/4\", Height: 5 3\/16\". The largest air filter in the Castair PM kit lineup — sized for the higher airflow requirements of 15–30HP rotary screw units with the G30 air end.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Filters (qty 4):\u003c\/strong\u003e Part number ROFD16-G30. Spin-on design. Shared with the D16 air end. If your shop runs Castair D16 units alongside G30 units, these filters cover both platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparator Filter (qty 1):\u003c\/strong\u003e Part number RSFD10-16-G30. Spin-on design. Multi-platform separator — also fits D10 and D16 air ends. The separator is the most critical filter in the system; it removes entrained oil from compressed air before it reaches downstream equipment. Using an OEM separator rated for your air end is not a place to substitute.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAST-LUBE Synthetic Compressor Oil (5 gallons):\u003c\/strong\u003e Castair''s own synthetic formulation for rotary screw air ends. Designed for the operating temperatures and pressures of rotary screw equipment. Five gallons covers one full oil change for a unit in this HP range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Castair Unit Models\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eR15312VG30:\u003c\/strong\u003e 15HP, 3-phase, 120-gallon vertical tank, 58 CFM, G30 air end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR15312HG30:\u003c\/strong\u003e 15HP, 3-phase, horizontal tank, G30 air end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR20312VG30:\u003c\/strong\u003e 20HP, 3-phase, vertical tank, G30 air end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR20312HG30:\u003c\/strong\u003e 20HP, 3-phase, horizontal tank, G30 air end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR25312VG30:\u003c\/strong\u003e 25HP, 3-phase, vertical tank, G30 air end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR25312HG30:\u003c\/strong\u003e 25HP, 3-phase, horizontal tank, G30 air end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR30312VG30:\u003c\/strong\u003e 30HP, 3-phase, vertical tank, G30 air end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR30312HG30:\u003c\/strong\u003e 30HP, 3-phase, horizontal tank, G30 air end\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x Air Filter 32DP (G30 paper element, ID: 5 3\/4\", OD: 9 1\/4\", HGT: 5 3\/16\")\u003c\/li\u003e\n\u003cli\u003e4x Oil Filter ROFD16-G30 (spin-on, also fits D16)\u003c\/li\u003e\n\u003cli\u003e1x Separator Filter RSFD10-16-G30 (spin-on, also fits D10\/D16)\u003c\/li\u003e\n\u003cli\u003e5 gallons CAST-LUBE synthetic compressor oil\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable Castair Preventative Maintenance Kits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMKP75 — P75 Air End, 5–15HP:\u003c\/strong\u003e Two air filters (20DP), four oil filters (ROFD62-P75), one separator (RSFLD3-4-6-G11-P75), five gallons CAST-LUBE. Smallest kit in the lineup, for P75 platform units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMKG11 — G11\/C11 Air End, 5–15HP:\u003c\/strong\u003e $628.47. Two air filters (RAFG11, OD: 3 7\/8\"), four oil filters (ROFD3-4-G11), one separator (RSFLD3-4-6-G11-P75), five gallons CAST-LUBE. For G11\/C11 platform units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMKD62 — D62 Air End, 15–25HP:\u003c\/strong\u003e $704.70. Two air filters (RAFD6-62, OD: 6 1\/8\"), four oil filters (ROFD62-P75), one separator (RSFD62), five gallons CAST-LUBE. Mid-range kit for D62 units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMKG30R — G30 Air End, 15–30HP (this kit):\u003c\/strong\u003e Largest PM kit in the lineup. Air filter 32DP (OD: 9 1\/4\") handles the highest-airflow units in the Castair rotary screw range. For 15–30HP G30 platform units.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll four kits save 10% vs. individual parts. Call 866-217-0063 to confirm which kit matches your specific model number.\u003c\/p\u003e\n\n\u003ch3\u003eFilter Reference — G30 Air End Individual Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter:\u003c\/strong\u003e 32DP — ID: 5 3\/4\", OD: 9 1\/4\", HGT: 5 3\/16\" — G30 paper element\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Filter:\u003c\/strong\u003e ROFD16-G30 — spin-on, also fits D16\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparator Filter:\u003c\/strong\u003e RSFD10-16-G30 — spin-on, also fits D10\/D16\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil:\u003c\/strong\u003e CAST-LUBE synthetic, available in 5-gallon jugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen Does a Shop Need This Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou have a 15–30HP Castair rotary screw unit with a G30 air end\u003c\/strong\u003e approaching its service interval. The MKG30R is the correct PM kit. The 32DP air filter is large format — do not try to substitute a smaller filter from the D62 or G11 kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou run one of the R-series G30 models\u003c\/strong\u003e (R15312VG30, R20312VG30, R25312VG30, R30312VG30, or horizontal equivalents). These are confirmed G30 air end units. The MKG30R is your service kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou run a 30HP unit at high duty cycle:\u003c\/strong\u003e A 30HP rotary screw running continuous or near-continuous duty needs on-schedule PM more urgently than a lightly-used machine. Stocking the MKG30R before the service interval hits prevents unplanned downtime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou need the separator for a D10 or D16 unit:\u003c\/strong\u003e The separator (RSFD10-16-G30) and oil filter (ROFD16-G30) in this kit also fit D10 and D16 air ends. If you run a D16 alongside a G30, this kit covers filters for both.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep down to MKD62 instead\u003c\/strong\u003e if your unit is a 15–25HP machine with a D62 air end. The D62 uses a smaller air filter (RAFD6-62, OD: 6 1\/8\") — you cannot use the 32DP G30 filter on a D62.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep down to MKG11 or MKP75 instead\u003c\/strong\u003e for units under 15HP. The G11 and P75 air ends use significantly smaller filters — the G30 kit parts will not fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIf you need a pump or motor assembly:\u003c\/strong\u003e Some listings reference MKG30R as a pump\/motor replacement. If you need a complete air end or pump\/motor assembly rather than consumable PM filters, call 866-217-0063 to confirm what is in the kit and whether a pump\/motor assembly is available for your unit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Part Number:\u003c\/strong\u003e MKG30R\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir End:\u003c\/strong\u003e G30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHP Range:\u003c\/strong\u003e 15–30HP rotary screw compressors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter P\/N:\u003c\/strong\u003e 32DP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter ID:\u003c\/strong\u003e 5 3\/4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter OD:\u003c\/strong\u003e 9 1\/4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter Height:\u003c\/strong\u003e 5 3\/16\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter Type:\u003c\/strong\u003e Paper element\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter Qty in Kit:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Filter P\/N:\u003c\/strong\u003e ROFD16-G30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Filter Type:\u003c\/strong\u003e Spin-on\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Filter Also Fits:\u003c\/strong\u003e D16 air end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Filter Qty in Kit:\u003c\/strong\u003e 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparator Filter P\/N:\u003c\/strong\u003e RSFD10-16-G30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparator Filter Type:\u003c\/strong\u003e Spin-on\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparator Also Fits:\u003c\/strong\u003e D10, D16 air ends\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparator Filter Qty in Kit:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Type:\u003c\/strong\u003e CAST-LUBE synthetic compressor oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Qty in Kit:\u003c\/strong\u003e 5 gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSavings vs. Individual Parts:\u003c\/strong\u003e 10%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Castair (Cast Air)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e R15312VG30, R15312HG30, R20312VG30, R20312HG30, R25312VG30, R25312HG30, R30312VG30, R30312HG30\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompressor parts specialists:\u003c\/strong\u003e We know the full Castair PM kit lineup and which kit matches which air end. The G30 filter dimensions are large enough that getting the wrong kit would be immediately obvious — but we confirm compatibility before you order anyway.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping:\u003c\/strong\u003e The MKG30R ships free. A 32DP filter (OD: 9 1\/4\") plus four oil filters and five gallons of oil is a substantial shipment — free shipping is real savings here.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree tech support:\u003c\/strong\u003e Call 866-217-0063 before ordering if you have any question about whether your unit runs a G30 or a different air end, or if you need clarification on whether MKG30R is a PM kit or a pump\/motor assembly for your application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull manufacturer warranty:\u003c\/strong\u003e All Castair OEM parts carry the full Castair warranty. No gray-market parts, no aftermarket substitutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonest recommendations:\u003c\/strong\u003e If you describe your unit and the MKG30R is not the right fit, we will tell you which kit is. We do not sell parts that do not fit your machine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342572150997,"sku":"MKG30R","price":1253.86,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-replacement-pump-motor-kit-g30r-15-30hp-mkg30r","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}