Perkins 4-108
1970–199050 HP4-cylinderdiesel
Dieselheat exchanger cooledinboard
Upgraded 4-107. Very common in 35-45ft cruisers. Known for reliability.
Specifications
| Power | 50 HP @ 2,800 RPM | Cylinders | 4 |
| Displacement | 1769.8 cc (108.0 ci) | Bore x Stroke | 91 x 103 mm |
| Fuel Type | Diesel | Aspiration | Naturally Aspirated |
| Cooling | Heat exchanger | Drive | Inboard |
| Weight | 247 kg (545 lb) | Dimensions (LxWxH) | 610 x 510 x 540 mm |
| Fuel Use | 9.38 L/hr |
Parts for the Perkins 4-108
173 catalogued parts. Prices are reference figures; each “Find on Amazon” link opens a search for that part — confirm fitment against your engine's serial before ordering.
Cooling System (35)
Bowman PE180 Heat Exchanger & Header Tank (Perkins 499 4107/8)$1,440.28Search
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Bowman PE180 Keel Cooled Manifold & Header Tank (Perkins 499, 4107/8)$1,092.35Search →
Perkins 4.108 Bowman Heat Exchanger (2486H005)$1,020.00Search →
Perkins 4.108 Raw Water Pump (3270-200)$460.00Buy on ↗
Thermostat Housing for Perkins 4107 & Perkins 4108 Engines$175.59Buy on ↗
Perkins 4.108 Jabsco Raw Water Pump Mounting Kit$91.00Buy on ↗
Speedseal Raw Water Pump Cover Plate Kit Perkins 4.108$88.00Buy on ↗
Perkins 4108 Water Pump (No Pulley)$82.70Buy on ↗
Perkins 4.108 Thermostat Housing Kit$81.00Buy on ↗
Sherwood 09959K Flexible 12 Vane Neoprene Impeller Kit (Through Key)$69.79Buy on ↗
Perkins 4.108 Water Pump Kit$69.00Buy on ↗
Johnson MC97 Pump Impeller for Johnson F4B, F5B, Volvo Pump (12 Blade)$63.40Buy on ↗
Jabsco Flexible Neoprene Pump Impeller (Spline Drive / 12 Blades)$46.71Buy on ↗
Perkins 4.108 Early Coolant Hose Set (For Front Mounted Exchanger)$44.00Search →
Perkins 4.108M Heat Exchanger End Caps$40.00Search →
CEF Neoprene Pump Impeller for Johnson F4B and F5B Pump (12 Blade)$36.04Buy on ↗
Perkins 4.108M Coolant Hose Replacement Kit$31.00Buy on ↗
Perkins 4.108 Bowman Heat Exchanger Filler Neck Assembly (3921-1)$31.00Search →
Perkins 4.108 Raw Water Pump, Impeller & Service Kit$24.00Buy on ↗
Thermostat 74°C Standard type without Shutoff$21.36Buy on ↗
Perkins 4.108 Water Pump Back Plate - equivalent to 024835$21.00Buy on ↗
Perkins 4.108 Jabsco Raw Water Pump Drive$20.00Buy on ↗
Perkins 4.108 Thermostat Kit$16.00Buy on ↗
Perkins 4.108 Raw Water Pump Hose Tails Pair$15.00Buy on ↗
Perkins 4.108 Jabsco Raw Water Pump Drive Shaft Coupling$12.00Buy on ↗
Perkins 4.108 Header Tank Cap - equivalent to 2487B401$11.00Search →
Perkins 4.108 Heat Exchanger & Oil Cooler Seal Kits$11.00Buy on ↗
Raw Water Pump Impeller Removal Tools$11.00Buy on ↗
Antifreeze & Coolant 2L$10.00Search →
Perkins 4.108 Raw Water Pump Mounting Plate Gasket Kit$9.00Buy on ↗
Perkins 4.108 Raw Water Pump Alignment Tool$7.00Buy on ↗
Thermostat Housing Gasket For Perkins 4107 & 4108 Engines$6.76Buy on ↗
Perkins 4.108 Lowline Heat Exchanger Anode$6.00Search →
Raw Water Pump Cover Plate Gasket Set$5.00Buy on ↗
Perkins Raw Water Pump Screws$4.00Buy on ↗
Fuel System (22)
Perkins 4.108 Set Of 4 Injector Nozzles$88.00Search →
Perkins 4.108 and 4.107 'Spin-On' Fuel Filter Conversion Kit$72.00Buy on ↗
DriveForce Spin-On Fuel Filter Conversion Kit (As CAV 296 Filters)$64.16Buy on ↗
Fuel Lift Pump with 4-Bolt Flange For Perkins 4108 Engines$58.17Buy on ↗
Aftermarket Perkins 4.99 / 4.107 / 4.108 Injector Flange$55.00Search →
Fuel Lift Pump For Perkins 4107 and 4108 Engines (2 bolt version)$54.71Buy on ↗
Perkins 4.108 Injector Pipes - For Mechanically Governed Pump$44.99Buy on ↗
Perkins 4.108 Injector Pump Anti Stall Valve$39.99Buy on ↗
Perkins 4.108 Fuel Filter Assembly$33.00Search →
Perkins 4.108 Injector Pipes For Marine (Lowline) Version$30.00Search →
Perkins 4.108 Fuel Lift Pump Kit$29.00Buy on ↗
Perkins 4.108 Injector Pump Drive Shaft Bushes (2511447)$25.00Buy on ↗
Perkins 4.108 Gasket & Seal Kit For Injector Pumps$21.00Buy on ↗
Perkins 4.108 Fuel Pump Pushrod$19.00Buy on ↗
Perkins 4.108 Fuel Filter Insertfits: and replaces the earlier Perkins referen$9.00Search →
Perkins Injector Banjo Bolt Set$9.00Search →
Wynn's Injector Cleaner 325ml$9.00Search →
Racor 500 FG fuel filter - equivalent to 861014$8.00Search →
Perkins 4.108 Fuel Filter Element$7.00Search →
Perkins 4.108 Injector Fixing Studs$6.00Search →
Delphi HDF296 Fuel Filterfits: 26561117$5.00Search →
Delphi Fuel Filter Assembly Drain Plug And Washer$2.00Search →
Lubrication (10)
Bowman DC60 Oil Cooler (54HP / 1/2" BSP Oil / 22mm ID Water)$185.32Search →
Perkins 4.108 Bowman Standard Oil Cooler$154.00Search →
Aftermarket Perkins Oil Filter Conversion Kitfits: the original setup with a spin-on filter$39.99Buy on ↗
Fram PH2821A Spin-On Oil Filter Element for Ford, Perkins, Volvo Penta$33.45Buy on ↗
Perkins 4.108 Bowman Oil Cooler End Cover Set$26.00Search →
Cartridge Oil Filter Element For Marine Engines Including Perkins 4108$22.69Buy on ↗
Spin-On Oil Filter Element For Ford Thornycroft Perkins (3/4"-16 UNF)$14.33Buy on ↗
Perkins 4.108 Spin-on Oil Filter$9.00Buy on ↗
Crosland Oil Filter Element for Thornycroft & Perkins as COF100102S$8.39Buy on ↗
Perkins 4.108 Oil Filter Element$7.00Buy on ↗
Belts (2)
Anodes (1)
Heavy Duty Propeller Shaft Zinc Anode$24.00Search →
Electrical (24)
Blue Sea 120A Split Charge Relay & Switch$204.00Search →
70 Amp Alternator (Insulated Earth)$194.00Buy on ↗
Perkins 4.108 Alternator High Output Isolated Earth 90A - equivalent to 2871A152$176.00Buy on ↗
Blue Sea 120A Split Charge Relay$154.00Search →
Perkins 4.108 Alternator 12V, 65+ Amp$137.00Buy on ↗
Perkins 4.108 Lowline Alternator - equivalent to 24123R$128.00Buy on ↗
Perkins 4.108 Alternator 12V 45 Amp - equivalent to 2871A103$110.00Buy on ↗
Perkins Digital Tachometer & Hour Meter Gauge - equivalent to 873686$77.00Search →
12v 60A Relay$44.00Search →
12V Heavy Duty Relay (100 Amp)$38.00Search →
Water Temperature Gauge with Sender$37.00Search →
Perkins 4.108, 12V 150A Insulated Earth Starter Solenoid$33.00Buy on ↗
Perkins 4.108 Starter Solenoid 100 Amp$33.00Buy on ↗
Perkins 4.108 Stop Solenoid$24.99Search →
Perkins 4.108 Glow Plug - equivalent to 2666409$23.00Search →
Perkins 4.108 Oil Pressure Gauge Sender$17.00Search →
Perkins 4.108 Glow Plug Adapter$15.00Search →
Perkins 4.108 Ignition Switch$14.00Search →
Perkins 4.108 Glow Plug Thermostart$12.00Search →
Perkins 4.108 Oil Pressure Switch - equivalent to 2848062$11.00
· $13.50 ↗
Perkins 4.108 Water Temperature Sender$11.00Search →
Perkins 4.108 Temperature Sender Adapter$5.00Search →
Alternator 'Euro Connector' Plug Kit$5.00Buy on ↗
Liqui Moly Battery Clamp Grease 50g$4.00Search →
Gaskets & Seals (12)
Sump Gasket Set For Perkins 4107 and Perkins 4108$114.81Buy on ↗
Perkins 4.108 Bottom Gasket Set$55.00Buy on ↗
Perkins 4.108 Top Gasket Set$53.00Buy on ↗
Perkins 4.108 / 4.107 / 4.99 Crankshaft Rear Seal Repair Kit$30.00Buy on ↗
Rope Oil Seal For Perkins 4107 & 4108 Engines (Rear Crankshaft)$26.45Search →
Perkins 4.108 Timing Cover Gasket & Seal Set$23.00Buy on ↗
Perkins 4.108 Cylinder Head Gasket - equivalent to 3681245$20.00Buy on ↗
Exhaust Manifold Outlet Gasket For Perkins 4107 & 4108 Engines$18.26Buy on ↗
Perkins 4.108 Fuel Washers & Seal Kit$9.00Buy on ↗
Perkins 4.99 / 4.107 / 4.108 Front Crankshaft Oil Seal - 0730098$5.00Search →
Perkins 4.108 Exhaust Manifold Gaskets - equivalent to 36862232$5.00Buy on ↗
Perkins 4.108 Exhaust Outlet Gasket$3.00Buy on ↗
Exhaust (7)
Perkins 4.108 Stainless Steel Exhaust Outlet Elbow - equivalent to 413165509$330.00Search →
Perkins 4.108M Exhaust Outlet Elbow$298.00Search →
Perkins 4.108 Bowman Exhaust Outlet Kit$86.00Buy on ↗
Perkins 4.108 Exhaust Elbow Water Inlet Kit (Stainless Steel)$71.00Buy on ↗
Nautilus Marine 51mm Wet Exhaust Hose - Lloyds Approved$39.00Search →
Perkins 4.108 Exhaust Elbow Hose Connector Kit (Bowman)$22.00Buy on ↗
Perkins 4.108 Exhaust Manifold Stud Set - 0826274$13.00Search →
Drive & Transmission (1)
Enfield / Sonic Flexible Shaft Coupling$94.00Search →
Propellers (1)
MPM Propeller Shaft Grease$8.00Search →
Service Kits (11)
Perkins 4.108 Engine Overhaul Kit$520.00Buy on ↗
Perkins 4.108 Valve Train Overhaul Kit$97.00Buy on ↗
Perkins 4.108 Piston Ring Kit$73.00Buy on ↗
Perkins 4.108 Drip Rail Kit$38.00Buy on ↗
Perkins 4.108 Fuel Pipe Kit$30.00Buy on ↗
Speedseal Service Kit Cover B$18.00Buy on ↗
Perkins 4.108 Fuel Pre Filter Kit$13.00Buy on ↗
Perkins 4.108 Oil Pressure Relief Valve Kit$11.00Buy on ↗
Delphi Blanking Plug Kit For Filter Assembly$11.00Buy on ↗
Perkins 4.108 Locking Tab Washer Kit$9.00Buy on ↗
Perkins 4.108 Breather Hose Kitfits: the right angle hose located between the$9.00Buy on ↗
Engine Mechanical (10)
Jabsco Engine Cooling Pump 3270-200 (3/4" BSP / Flange Mount)$715.57Buy on ↗
Perkins Aftermarket 4.107 / 4.108 / 4.99 Crankshaft- ZZ90160$450.00Search →
Perkins 4.108 Cylinder Head Studs (32524138)$143.00Search →
Perkins 4.108 Lowline Engine Mounting$101.00Search →
Perkins 4.108 Timing Gears$99.00Search →
Perkins 4.108 & 4.107 Rocker Shaft Assembly Bracket$61.00Search →
Perkins 4.108M Engine Mounts$36.00Search →
Perkins 4.108 Main Bearings$21.00Search →
Perkins 4.108 Connecting Rod Bearings$18.00Search →
Perkins 4.108 Timing Cover 'Oil Slinger'$11.00Search →
Other Parts (37)
Johnson F5B-9002 Flange Mounted Engine Cooling Pump (3/4" BSP Female)$708.15Buy on ↗
Liqui Moly Marine Anti-Limescale 5L$41.00Search →
Liqui Moly Marine Antifreeze 5L$35.00Search →
Universal Voltmeter$34.00Search →
Liqui Moly Anti-Bacteria 'Diesel Bug' Additive 1L$31.00Search →
Perkins 4.108 High Water Temperature Alarm$29.00Search →
Exopro Classic 20W-50 Mineral Oil - 5L$27.00Search →
Perkins 4.99 / 4.107 / 4.108 Pushrod$26.00Search →
Marine Diesel Engines by Nigel Calder$26.00Search →
Perkins 4.108 Rocker Arm Bush Set$24.00Search →
MPM Antifreeze Concentrate 5L$23.00Search →
Liqui Moly Marine Diesel Protect 500ml$21.00Search →
Perkins 4.108 Pre Combustion Chamber Insert (37443591)$20.00Search →
Perkins 4.108 Low Oil Pressure Alarm$19.00Search →
Perkins Engine Paint (500ml)$17.00Search →
Lucas Extreme Duty Marine ATF$17.00Search →
Rydlyme Marine Descaler$14.00Search →
Liqui Moly Diesel Purge 1L$14.00Search →
Liqui Moly Marine Universal Cleaner k 1L$14.00Search →
Perkins 4.108 Rocker Cover Set & Repair Option$13.00Search →
Perkins 4.108 Thrust Washer Set$13.00Search →
Perkins 4.108 Water Inlet Connector$13.00Search →
Liqui Moly Marine ATF Oil 1L$13.00Search →
Perkins 4.108 Core Plug Set$11.00Search →
Perkins 4.108 Oil Filler Cap$11.00Search →
JB Marine Weld$11.00Search →
JB Marine Weld Syringe$11.00Search →
Perkins 4.108 Sump Drain Bolt - equivalent to 650593$9.99Search →
Liqui Moly Engine Assembly Paste (50g)$9.00Search →
Liqui Moly Marine Grease 250g$9.00Search →
Liqui Moly Marine Multi-Spray (400ml)$9.00Search →
Perkins 4.108 Drain Tap - equivalent to 31419$8.00Search →
UNF Stainless Steel Nuts$7.00Search →
A1 Marine Fuel Delivery Hose$7.00Search →
Lucas 12v Peanut Light Bulb$4.99Search →
Stainless Steel T-Bolt Clamp Set$4.00Search →
Stainless Steel Hose Clips$1.00Search →
Part data aggregated from marine-diesel parts catalogues. As an Amazon Associate, SailPages earns from qualifying purchases.
Sailboats with Perkins 4-108(39)
BRISTOL 40
Bristol Yachts Inc. (USA) · 40.16ft · 1970–1986
CAL 39 (HUNT/O'DAY)
Bangor Punta (USA) · 39ft · 1988–1997
CAL 48
Jensen Marine (USA) · 47.75ft · 1966–1970
COASTER 33 (HILL)
Robert Ives Ltd. (UK) · 32.75ft · 1972–1988
COLUMBIA 43
Columbia Sailing Yachts (USA) · 43.25ft · 1969–1974
CORONADO 35
Coronado Yachts (USA) · 35.25ft · 1971–1976
CSY 33
CSY · 33.04ft · 1978–1981
CSY 37
Caribbean Sailing Yachts · 37.25ft · 1978–1981
DICKERSON 37 CC
Dickerson Boat Builders (USA) · 37ft · 1981
EBBTIDE 33
Oceancraft (UK) · 33ft · 1982
ENDEAVOUR 37 (CUTTER W/BOWSPRIT)
Endeavour Yacht Corp. (USA) · 37ft · 1977
ENDEAVOUR 40
Endeavour Yacht Corp. (USA) · 40ft · 1981–1985
EVASION 32 (BENETEAU)
Beneteau (FRA) · 31.82ft · 1973–1981
FAST PASSAGE 39
Philbrooks Shipyard (CAN) /Tollycraft · 39.5ft · 1976–1985
FIRST 38 (BENETEAU)
Beneteau (FRA) · 40.2ft · 1982
FIRST 456 (BENETEAU)
Beneteau (FRA) · 45.5ft · 1982
FORMOSA 41
Formosa Boat Yard Ta Chiao · 40.92ft · 1972
FREEPORT 36 (ISLANDER)
Islander Yachts (USA) · 35.75ft · 1976–1984
GULFSTAR 37
Gulfstar Yachts (USA) · 37ft · 1976–1979
GULFSTAR 41
Gulfstar Yachts (USA) · 41ft · 1973–1975
HOOD 38 (WAUQUIEZ)
Henri Wauquiez (FRA) · 38.06ft · 1978–1989
IRWIN 37-1
Irwin Yachts (USA) · 37ft · 1971–1975
ISLANDER 36
Islander Yachts (USA) · 36.08ft · 1971–1986
MOODY 376
Marine Projects Ltd. · 37.83ft · 1985–1991
MORGAN 382
Morgan Yachts (USA) · 38.33ft · 1977–1982
MORGAN 41
Morgan Yachts (USA) · 41ft · 1967–1972
MORGAN 43
Morgan Yachts (USA) · 43ft · 1985
NICHOLSON 38
Camper & Nicholson Ltd. (UK) · 37.83ft · 1966–1975
OCEANIS 390 (BENETEAU)
Beneteau · 38.33ft · 1987
OCEANIS 430 (BENETEAU)
Beneteau · 42.52ft · 1986–1992
OYSTER 406
Oyster Marine · 40.49ft · 1986–1990
PASSPORT 40
Passport Yachts Inc. (TAIWAN) · 39.42ft · 1980–1991
PEARSON 365
Pearson Yachts (USA) · 36.42ft · 1976–1982
PEARSON 386
Pearson Yachts (USA) · 38.25ft · 1984–1985
SLOCUM 43
Cruising Yachts Int./Formosa · 42.5ft · 1981–1990
TAYANA 37
Ta Yang Yacht Building Co. (TAIWAN) · 36.67ft · 1976
TRINTELLA III
Anne Wever Shipyard (NL) · 35.24ft · 1969–1979
VIKSUND 31 GOLDFISH MS
Viksund Boats (NOR) · 30.84ft · 1972
WESTSAIL 32
Westsail Corp. (USA) · 32ft · 1971–1981