We carry many parts you need for your portable diesel generator driven by either 178F/E or 186F/E/AE engine. Some selected parts from our stock are listed below. For your convenience, please refer to Exploded View of Parts List . Before you make a call with us, please make sure what type of enigne is installed in your generator. You can identify your enigne type by looking close at your fuel injection pump with characters either 86 or 70/78 marked on. You can also identify from EPA Sticker pasted somewhere in your generator. If you have a problem with identifying your engine, please just give us your brand name and model, we help you find out. Parts can be ordered by calling or faxing OptiGenerators at
the numbers provided:
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78-1701402 or 86-1701403 |
178/186F/FE/FAE Piston Ring Set |
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78-1701202 or 86-1701204 |
178/186F/FE/FAE Piston |
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78-1702601, 78-1702602, 86-1702603 or 86-1702503 & 86-1702604 or 86-1702605 |
Intake & Exhaust Valves |
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78-1701802 or 86-1701803 |
Main Bushing |
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78-1701502 or 86-1701503 |
Connecting Rod Journal Bearing |
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78-17157 or 86-1715701, 86-171501 |
Valve Lifters(Tappets) |
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78-1705102 or 86-1705103 |
Push Rods |
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78-1702302 or 86-1702302 |
Oil Pump Driving Gear |
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78-17165 or 86-17165 |
Valve Clearance Adjusting Screws |
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78-1702004 or 86-1702100 |
Valve Guide Oil Seal |
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78-1702106 or 86-1702106 |
Valve Cap, Spacer of Valve Adjustment |
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6800S214 |
Lower Muffler |
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6800S210 |
Upper Muffler |
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78-1711400 or 86-1711400 |
Speed Control Lever Assembly, FG Handle Assembly |
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78-171211 or 86-171211 |
Oil Drain Plug Extension |
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78-17066 or 86-1706603 |
Cylinder Head Cover Assembly |
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78-17174 |
Air Cleaner Assembly for 178 Engine |
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6800S418 |
4" or 7" Solid Wheels |
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78-17182, 78-1801207 or 86-1720106 & 86-1801307 |
Oval Ring Gasket |
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6800S417 |
Shock Absorbing Rubber Leg |
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78-17170 |
Cylinder Cover Gasket(178F/FE) |
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86-1717001 |
Cylinder Cover Gasket (186F/FE/FAE) |
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10A250VFL |
250V 10A Fuse(3/4" Long) |
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10A250VFS |
250V 10A Fuse(1/2" Long) |
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16A125V250VGPS |
125V/250V 16A Glow Plug Switch |
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1704303, 78-1704303, 86-1704303 & 6800S102 |
Fuel Filter |
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1704700A |
12V Fuel Pump Solenoid, 12V Fuel Shutoff Solenoid, 12V Fuel Cutoff Solenoid |
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171216, 78-171216,86-171216 ETQ4LE8 or ETQ6LE8 |
Oil Pressure Sensor, Oil Pressure Switch |
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1716004,ES1801039, ETQ4LE2 or ETQ6LE2 |
Starter Motor Assembly for 170/178/186 Diesel Engine |
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1716004A, ES1801039A |
Starter Motor Solenoid/Relay |
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6800S313 |
Electrical Terminal Block |
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1716100A |
Magnet Ring Assembly of Flywheel Alternator(Generator) |
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1716100,1801030, ES1801030 |
Flywheel Alternator(Generator) Winding |
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78-1717602 |
Air Filter Element |
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78-1705302 |
Fuel Injector Sleeve Gasket for 178 Engine |
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86-1705302 |
Fuel Injector Sleeve Gasket for 186 Engine |
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23A12VALK |
23A 12V Alkaline Battery |
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6800S100 |
Type B Fuel Coke Assembly |
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6800S216 |
Catalytic Converter Ripple Pipe |
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6800S225, 78-17186 & 86-1718601 |
Graphite Exhaust Gasket |
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6800S311, CBB61SHDB, ETQ4LE13 or ETQ6LE13 |
CBB61 36uF 400VAC 50/60 Hz(Performs better than CBB61 35uF 450VAC 50/60 Hz)Generator Capacitor for Brushless Alternator
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6800S312 |
Generator Automatic Voltage Regulator(AVR) 250V 470uF for Brush Alternator |
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6800S312A or PGCARBONBRUSH |
Generator Carbon Brush Assembly for Brush Alternator, Used together with an AVR |
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6800S503, 99T1, ETQ4LE88 or ETQ6LE88 |
Volt Meter |
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6800S507 or E-TEN1321 |
120V/240V Voltage Toggle Switch(Selector) |
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6800S509 |
30A Four Prong Twist Lock |
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6800S510 |
30A Three Prong Twist Lock |
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6800S515, ETQ4LE93 or ETQ6LE93 |
Circuit Breaker |
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86-1704700A or 78-1704702A |
Fuel Injector Pump with Solenoid |
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86-1705403 or 78-1705402 |
Muffler Assy for Open Frame |
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86-1716801 or 78-17168 |
Rocker Arm Assembly |
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CJX22 or J1486 |
Control Board for Fuel Pump Solenoid & Oil Pressure Sensor |
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Glowplug |
12V Glow Plug |
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Hourmeter, ETQ4LE85 or ETQ6LE85 |
12V Hour Meter |
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Digitalhourmeter |
12V Digital Hour Meter |
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KBPC2510 |
12V Bridge Rectifier |
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Remoteassy |
7 or 8-Wired Remote Control Assembly(Standard 7-Wired & Special 8-Wired with Wireless Remote Glow Plug Control) |
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Voltagestabilizer,ES1801045, ETQ4LE5 or ETQ6LE5 |
12V Voltage Stabilizer(Regulator) |
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1711103 |
3x6Pin(GB119-82) |
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78-17135 & 86-1713501 |
Oil Pump Assembly |
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17150 |
Fuel Tank Coke Assembly |
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86-1704302 |
Fuel Filter Assembly(Open Frame) |
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78-1704702 or 86-1704700 |
Fuel Injector Pump(No Solenoid) |
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78-1705602 or 86-1705603 |
High Pressure Fuel Pipe |
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ZY20-10, ETQ4LE97 or ETQ6LE97 |
Rotor Zener Diode for Brushless Alternator |
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78-1705301 |
Fuel Nozzle Injector Assy for 178F/FE Engine |
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86-1705301 |
Fuel Nozzle Injector Assy for 186F/FE/FAE Engine |
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1702101, 78-1702101 & 86-1702101 |
Oil Fiter Assembly |
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1702002, 78-1702002 & 86-1702002 |
Oil Dipstick |
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1704716, 1711334, 1711324, 1711310 & 1711316
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O Rings for Fuel Pump Nipple, Oil Pump, Oil Dipstick, Decompression Lever
& Oil Filter
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17121 |
Oil Drain Plug |
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17120 |
Oil Drain Plug Gasket |
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1717601, 86-1717601 |
Air Filter Element |
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86-1717401 |
Air Filter Assembly |
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78-1704602 or 86-1704603 |
Crankcase Cover Gasket for 178/186 Engine |
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86-1703103 |
Intake Pipe Gasket |
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78-1719704 or 86-1706314 |
Cylinder Head Gasket |
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78-1711702, 78-1711703, 86-1711704 & 86-1711705 |
Front & Rear Oil Seals for 178/186 Engine |
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17146 |
Fuel Cup Filter (Strainer) |
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17153 |
Diesel Fuel Tank Cap |
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1710007, 1710001, 1710003, 78-1710010, 1710008, 1710000, 1710004 & 86-1710010 |
Bearings 6307, 6202, 6206, 7941(178F/FE), 6308, 6203, 6207 & 7941(186F/FE/FAE) |
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6800S501, ETQ4LE82 or ETQ6LE82 |
5 or 6-Wired Starter ignition Key Switch (Standard 5-Wired & Special 6-Wired with Glow Plug Control) |
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1719403 |
Fuel Hose Clamp |
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78-17186, 86-1718601 |
Muffler Gasket(Open Frame) |
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1719605 |
Initial Angle Adjustment shim(Fuel Pump Gasket) |