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APEX Helicopters

RHC PART · FITS R44 · AUTHORIZED ROBINSON HELICOPTER DEALER

KI-4406 IO-540 Engine Installation Prov Kit

Robinson part number KI-4406, IO-540 engine installation prov kit, for the R44. Factory-new from APEX Helicopters, an authorized Robinson service center at Fort Lauderdale Executive (FXE). Send the RFQ and a service specialist confirms price, availability, lead time, and install hours.

PART NUMBER
KI-4406
DESCRIPTION
IO-540 ENGINE INSTL PROV KIT
UNIT
KIT
FITS
R44
CONDITION
FACTORY NEW
2026 LIST PRICERHC price list, effective January 1, 2026
$6,960.00

List price shown for reference. Call (954) 914-0600 or send the RFQ: availability, lead time, and install hours quoted together, usually the same business day.

What's in this kit

78 items · Robinson Kit Instructions KI-4406, revision HShow the list ▸

Every part Robinson packs in KI-4406, in the order of the Kit Instructions. Tap a part number for its page and price. Alternates are supplied only when selected at order.

PART NUMBERDESCRIPTIONQTY
KI-4406InstrKit Instructions1
A130-51Spacer1
A412-1Cover2
A457-6Fitting1
A457-9Tee1
A457-10Elbow1
A484-3Plate6
A701-1.5FTAluminum Tape (1-inch wide, 5 foot length)1
A729-10Tube1
A729-31*Tube (for use with C727-2 breather tube [0.75-inch diameter])1
A729-34Tube1
A729-35Tube1
A729-36Tube1
A785-19Hose – Air Duct (magnetos)2
A785-32Hose – Air Duct (alternator)1
B161-102-3Spirap (1/8-inch diameter, 3-inch length)4
B162-2Clipnut12
B173-6V-Belt – Alternator (for use with D748-6 alternator. This part will be provided unless an alternate part [below] is selected.)1
B173-2orV-Belt – Alternator (for use with D729-2 alternator) · supplied instead of the part above when selected–
B173-3orV-Belt – Alternator (for use with D748-1 alternator) · supplied instead of the part above when selected–
B277-16Clamp2
B277-24Clamp2
B277-28Clamp6
B283-7Hose Assembly (fuel system)1
B401-2Grommet – Angle Valve11
C306-4Panel Assembly (upper)1
C306-5Panel (lower)1
C309-6Panel Assembly1
C310-4Panel Assembly (upper)1
C310-5Panel (lower)1
C357-1Clip – Single Bend ([6] for ignition harness; [1] for LH magneto cooling hose)7
C357-3Clip – Straight (oil cooler lines)3
C357-4Clip – Double Bend (replaces C357-1 clip for RH magneto cooling hose)1
C449-1Cover Assembly (engine, RH side)1
C449-3Cover Assembly (engine, LH side, with aft battery installation. This part will be provided unless alternate part [below] is selected.)1
C449-1orCover Assembly (engine, LH side, all other battery installations) · supplied instead of the part above when selected–
C487-1Retainer – Straight2
C487-2Retainer – Bent2
C653-1Rubber Pads - Engine mount2
C653-2Rubber Pads - Engine mount2
C730-1Guard – Fuel Hose1
D143-1Nut Assembly2
D210-3Nut12
D319-4Fitting (replaces superceded MS21900D6 adapter)1
D380-1Panel Assembly – LH1
D380-3Panel Assembly – Center (large)2
D380-7Panel Assembly – LH (end)1
D380-9Panel – Center (small)2
D380-10Panel Assembly – RH1
D380-12Panel Assembly – RH (end)1
D381-1Cover Assembly – LH (cooling system)1
D382-4Cover Assembly – RH (top)1
D382-5Cover Assembly – RH (end)1
D664-2Strap2
D695-6Cover1
D751-1Panel Assembly – Aux Oil Cooler1
D754-1Baffle Assembly – Intercylinder1
D774-13Spring4
STD-160Lockwasher (Lycoming part number)2
06B26811**Gasket (Lycoming part number)6
73032Gasket (Lycoming part number)1
MS21042L08Nut117
MS21919WDG2Clamp2
MS21919WDG4Clamp2
MS21919WDG6Clamp2
MS21919WDG7Clamp1
MS21919WDG22Clamp2
MS27039C0805Screw119
MS27039C0806Screw32
MS27039C0807Screw2
MS29512-06Packing1
MS3367-3-9Ty-Rap10
MS3367-5-9+Ty-Rap (Note: “+” in contents part number indicates 20-qty pack)1
MS3367-7-9+Ty-Rap (Note: “+” in contents part number indicates 10-qty pack)1
MS35489-2Grommet6
NAS1149F0332P+Washer (Note: “+” in contents part number indicates 20-qty pack)1
NAS1149FN816P+Washer (Note: “+” in contents part number indicates 20-qty pack)10
NAS1351-3-6PScrew1
NAS1351-3-16PScrew12
NAS1352-08-8PScrew – Socket Cap5
NAS6603-5Bolt1
  • *Engines equipped with C728-2 engine air/oil separator assembly require [1] A785-43 hose and [1] A729‑77 tube; order parts separately. To upgrade breather tube installation with air/oil separator installation, order KI-255-2 R44-series Engine Air-Oil Separator Installation Kit.
  • **Replaces cork gaskets (if installed) under rocker box covers on engine.

Contents from Robinson Helicopter Company Kit Instructions KI-4406, revision H, 5 October 2022. Open the official Kit Instructions PDF ↗ · Current revisions are listed under Kit Instructions on Robinson's publications page ↗

Kit terms

  • Includes all engine cooling panels
  • Not required when purchasing an RHC overhauled/exchange engine
  • RHC recommends the MT563-1 scroll-to-engine drill jig
  • RHC limited parts warranty: 1 year or 1,000 hours, whichever comes first

Full guide: R44 engine build-up kit guide →

Illustrated parts catalogs

How ordering works

  • Send the RFQ with quantity + aircraft serial
  • We quote price, availability + install hours
  • Approve and schedule

Aircraft on ground? AOG requests jump the line. Serial effectivity and applicable service bulletins are checked on every quote, by a person.

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Not the part you need? Send any Robinson part number, the RFQ takes whole lists.

Call (954) 914-0600