Beneteau 423 (Oceanis 423)
Built 2002–? by Beneteau (France; some US models built in Marion, SC)
Own one? Keep her maintenance, manuals and checklists here — free for a week
Shopping? Find the right used boat
Looking at one? Sea-trial scorecard
About the Beneteau 423 (Oceanis 423)
Researched from public sources for this model. Any individual boat may have been modified or repowered — confirm before relying on any figure.
- Built
- 2002–?
- Builder
- Beneteau (France; some US models built in Marion, SC)
- Designer
- Groupe Finot
- Length
- 43.14 ft
- Waterline
- 38.55 ft
- Beam
- 12.93 ft
- Draft
- 5.58 ft
- Displacement
- 19,500 lb
- Ballast
- 5,836 lb
- Hull / keel
- fin keel
- Rig
- sloop
- Fuel
- 53 gal
- Water
- 154 gal
- Water heater
- 11 gal · AC
- Bow thruster
- factory option
- Stern thruster
- not fitted
- Steering
- pedestal cable
Tank capacities — where the figures come from
-
Fuel 53 gal
“Fuel Capacity: Approx. 200 L (53 US gallons)” — search excerpt, networkyachtbrokers.com · “Fuel tank approx. 200 ltrs” — search excerpt, batagent.seTwo broker listings agree on about 200 L; no builder figure could be checked.
-
Water 154 gal
“Water Capacity: Approx. 580 L (154 US gallons)” — search excerpt, networkyachtbrokers.com · “550 litres of fresh water” — search excerpt, boatsall.com · “Water approx. 400 ltrs” — search excerpt, batagent.seListings give 400, 550 and 580 L, possibly different tank options or layouts (owner vs charter), but no builder document was found to say which is standard. 580 L converts to 153 gal; our earlier 154 follows the listing's own conversion.
-
Holding unknown
“Holding tank approx. 40 ltrs (deck discharge)” — search excerpt, batagent.seOne listing only; may be a single head's tank on a two-head boat.
-
Water heater 11 gal · AC
“WATER HEATER 42L = 11 US gal.” — owner's manual (2003), sbo.sailboatowners.comBeneteau USA's owner's manual (Feb 2003) shows a 42 L (11 US gal) heater in every layout's fresh-water diagram and on the 110/220V circuit, but doesn't label it standard or optional, and no engine coil is described.
Tanks are often replaced or added on older boats — check the tank labels or a survey for yours.
Thrusters and steering — where this comes from
-
Bow thruster factory option
“Optional Equipment ... Bow Thruster 40 (88)” — owner's manual (2003), sbo.sailboatowners.com · “Bow thruster 12V” — owner's manual (2003), sbo.sailboatowners.comThe Beneteau USA owner's manual (February 2003) lists a bow thruster (40 kg) among optional equipment in its loading table and shows a 12-volt bow-thruster circuit in the wiring schedule; make and model aren't named.
-
Stern thruster not fitted
The owner's manual's optional-equipment table lists a bow thruster only, but it isn't a full option list, so our earlier figure of none is unconfirmed.
-
Steering pedestal cable
“an emergency tiller for use if there is a failure in the wheel steering system. Check at least once a year that the stee” — owner's manual (2003), sbo.sailboatowners.com · “7 Quadrant ... 11 Steering Cable 12 Idler Sheave Box 13 Steering Chain 14 Steerer 15 Wheel Brake 16 Steering Wheel” — owner's manual (2003), sbo.sailboatowners.comThe builder's manual shows chain-and-wire steering: steerer, chain, and cables over idler sheaves to a quadrant, with wheel brake and emergency tiller. It refers to steering wheels in the plural. No maker is named.
Thrusters and steering are often replaced — check the units on your boat before ordering parts.
Sources disagree on Yanmar model — left blank rather than guessed.
Bulb fin with spade rudder; shallow keel 4.76 ft, deep 6.89 ft. No model-specific problem sources were read.
Engines fitted
-
Volvo Penta D2-55 — 55 hp, diesel, single
standard
Standard engine, especially on North American boats; owners praise its quietness. A 2004 boat for sale has a D2-55.
- Volvo Penta — 80 hp, diesel standard
-
Yanmar 4JH3E / 4JH4E — 56 hp, diesel, single
factory option
Fitted on many European/export hulls instead of the Volvo.Sources: murrayyachtsales.com · boattomorrow.com
Boats of the same model can differ — check which engines yours actually has before ordering parts.
Generator
The owner's manual lists air conditioning as an optional weight item but mentions no generator. One owner's forum post describes a 2004 boat with two air conditioning units and no generator, though the 423 owners' group does discuss generators.
Manuals and brochures online
- Owner's manual Beneteau 423 owner's manual (Beneteau USA, Feb 19 2003, R01 hull 19 up, 76 pp.) (2003) — sbo.sailboatowners.com
Hosted by the builder or an owners' association; they own the copyright.
Known problems for this model
No well-sourced problem reports found yet.
Engines & parts
Volvo Penta D1 / D2 series (D1-13 to D2-75) parts: good
Factory standard engine — you entered “Volvo Penta D2-55”
Current-generation small Volvo diesels (Perkins-derived per owners). Glow plugs, injectors and filters can be bought cheaper via Perkins and aftermarket sources; stainless replacement exhaust elbows are sold aftermarket.
Parts sources: MarineDustrie, AB Marine Service (exhaust elbow)
Common problems (3)
-
Exhaust elbow / manifold corrosion exhaust
The cast elbow rots and has a narrow water passage, which lets water back into the manifold and corrode it through where the two meet; an aftermarket stainless elbow is the usual fix.sailnet.com · myhanse.com
-
Fuel pump controller failure fuel
Contamination or failure of the fuel pump controller is listed as one of the most common D1 faults.marinedustrie.com
-
Overheating from corroded heat exchanger/manifold cooling
Corrosion holes in the combined heat exchanger/manifold cause overheating on D1 and D2 engines.myhanse.com · facebook.com
Maker’s service schedule (16)
| Engine oil & filter change D2-55 / D2-75 (2006 operator's manual 7747110) | 500 hrs or 1 yr | “After that they should be changed every 500 operating hours or at least once a year.” — manufacturer, noshoes-resoled.com |
| Fuel filters & water separator D2-55 / D2-75 (2006 operator's manual 7747110) | 500 hrs or 1 yr | “Every 500 operating hours or at least once a year, included in Extended Protection” — manufacturer, noshoes-resoled.com |
| Raw-water pump impeller D2-55 / D2-75 (2006 operator's manual 7747110) | 500 hrs or 1 yr | “Every 500 operating hours or at least once a year, included in Extended Protection” — manufacturer, noshoes-resoled.com |
| Check idling speed D2-55 / D2-75 (2006 operator's manual 7747110) | 500 hrs or 1 yr | “Every 500 operating hours or at least once a year, included in Extended Protection” — manufacturer, noshoes-resoled.com |
| Clean the vacuum (siphon-break) valve D2-55 / D2-75 (2006 operator's manual 7747110) | 500 hrs or 1 yr | “Every 500 operating hours or at least once a year, included in Extended Protection” — manufacturer, noshoes-resoled.com |
| Transmission fluid change D2-55 / D2-75 (2006 operator's manual 7747110) | 200 hrs or 1 yr | “Every 200 operating hours or at least once a year, included in Extended Protection” — manufacturer, noshoes-resoled.com |
| Lubricate the propeller-shaft seal (reverse-gear installations) D2-55 / D2-75 (2006 operator's manual 7747110) | 200 hrs or 1 yr | “Every 200 operating hours or at least once a year, included in Extended Protection” — manufacturer, noshoes-resoled.com |
| Check S-drive / reverse-gear corrosion protection (anodes) D2-55 / D2-75 (2006 operator's manual 7747110) | 200 hrs or 1 yr | “Every 200 operating hours or at least once a year, included in Extended Protection” — manufacturer, noshoes-resoled.com |
| Air filter / intake silencer D2-55 / D2-75 (2006 operator's manual 7747110) | 500 hrs or 2 yrs | “Every 500 operating hours or at least once every two years” — manufacturer, noshoes-resoled.com |
| Coolant replacement & freeze-point test D2-55 / D2-75 (2006 operator's manual 7747110) | 500 hrs or 2 yrs | “Every 500 operating hours or at least once every two years” — manufacturer, noshoes-resoled.com |
| Heat exchanger & oil cooler cleaning D2-55 / D2-75 (2006 operator's manual 7747110) | 500 hrs or 2 yrs | “Every 500 operating hours or at least once every two years” — manufacturer, noshoes-resoled.com |
| Injector test / service D2-55 / D2-75 (2006 operator's manual 7747110) | 500 hrs or 2 yrs | “Every 500 operating hours or at least once every two years” — manufacturer, noshoes-resoled.com |
| Valve clearance check / adjust D2-55 / D2-75 (2006 operator's manual 7747110) | 500 hrs or 2 yrs | “Every 500 operating hours or at least once every two years” — manufacturer, noshoes-resoled.com |
| Check S-drive rubber seal (hull/drive); clean folding propeller D2-55 / D2-75 (2006 operator's manual 7747110) | 1 yr | “Least once a year, included in Extended Protection” — manufacturer, noshoes-resoled.com |
| Replace propeller-shaft seal (reverse-gear installations, workshop) D2-55 / D2-75 (2006 operator's manual 7747110) | 500 hrs or 5 yrs | “Every 500 operating hours or at least every fifth year” — manufacturer, noshoes-resoled.com |
| Replace S-drive rubber seal between drive and hull (workshop) D2-55 / D2-75 (2006 operator's manual 7747110) | 7 yrs | “Every seventh year” — manufacturer, noshoes-resoled.com |
Service part numbers (5)
| Oil filter D1-30, D2-40, D2-50, D2-55, D2-60, D2-75 |
Volvo Penta 3840525 | “p.90 "D1-30, D2-40" block: Oil filter — 3840525” — manufacturer, volvopenta.com · “# Volvo Penta D2-40 … [OIL FILTER] Part Number: 3840525” — dealer, marinepartsexpress.com |
| Fuel filter | Volvo Penta 861477 | “p.90 "D1-13, D1-20" block: Fuel filter — 861477” — manufacturer, volvopenta.com · “# Volvo Penta D1-30 … [FUEL FILTER] Part Number: 861477” — dealer, marinepartsexpress.com |
| Raw-water impeller D1-13, D1-20, D1-30, D2-40 |
Volvo Penta 22222936 | “p.90 "D1-13, D1-20" block: Impeller kit — 22222936” — manufacturer, volvopenta.com · “IMPELLER KIT … D2-40,D2-40B,D2-40F,D1-30,D1-30B,D1-30F,… D1-13,D1-13B,D1-13F,D1-20” — dealer, volvopentaparts.shop |
| Raw-water impeller D2-50, D2-55, D2-60, D2-75 |
Volvo Penta 21951346 Replaces 3862281, 3855546, 3856039 |
“p.90 "D2-50, D2-55, D2-60, D2-75" block: Impeller kit — 21951346” — manufacturer, volvopenta.com · “Volvo Penta: 21951346, 3862281, 3855546, 3856039 / … D2-55, D2-75” — dealer, repowermarine.com |
| Thermostat D1-13 to D2-75 |
Volvo Penta 3842015 | “# Volvo Penta D1-30 … [THERMOSTAT] Part Number: 3842015” — dealer, marinepartsexpress.com · “Genuine Volvo Penta Thermostat 3842015 D1-13, D1-20, D1-30 D2-40, D2-55, D2-60, D2-75” — dealer, repowermarine.com |
| Drive belt D1-13, D1-20, D1-30, D2-40 (alternator / coolant-pump multi-rib belt) |
Sources disagree: 21951188 / 21951188 / 21314684 | “Part Number: 21951188 … Supersedes: 3812159 … D1-13 (B and F variants) … D2-40” — dealer, marisolmarine.com · “Volvo Penta 21951188 Alternator belt D1-30 D1-30F D1-30B D2-40 D2-40B D2-40F” — dealer, dedieseldokter.nl |
From the engine maker’s parts lists, or two independent parts dealers. Numbers change with serial number and get superseded — check yours before ordering.
Yanmar 4JH series (4JH, 4JH2/3/4, -E, -TE, -HTE) parts: good
Factory optional engine — you entered “Yanmar 4JH3E / 4JH4E”
Widely used and fully supported by Yanmar dealers and distributors; the mixing elbow is treated as a consumable part.
Parts sources: Mack Boring & Parts (Yanmar distributor), Yanmar USA genuine parts
Common problems (1)
-
Mixing elbow failure exhaust
The exhaust mixing elbow on 4JH engines pits and fails, sometimes within a few hundred hours; owners treat roughly 1000 hours as a practical life and inspect the elbow-to-manifold joint for salt weeping.cruisersforum.com · jeanneau.proboards.com · facebook.com
Maker’s service schedule (18)
| Engine oil & filter change 4JH3E / 4JH3(B)E / 4JH3(C)E | 150 hrs | “4.3.3 Inspection Every 150 hours. Replace the engine oil and the clutch lube oil. After the second oil change, the engin” — manufacturer, catalina380.org |
| Replace engine oil filter 4JH3E / 4JH3(B)E / 4JH3(C)E | 300 hrs | “4.3.4 Inspection Every 300 Hrs. ... (4) Replacing the Engine Oil and Lube Oil Filter (See 4.3.1(1))” — manufacturer, catalina380.org |
| Transmission fluid change 4JH3E / 4JH3(B)E / 4JH3(C)E | 150 hrs | “4.3.3 Inspection Every 150 hours. Replace the engine oil and the clutch lube oil.” — manufacturer, catalina380.org |
| Fuel filters & water separator 4JH3E / 4JH3(B)E / 4JH3(C)E | 300 hrs | “4.3.4 Inspection Every 300 Hrs. (1) Replacing the Fuel Filter” — manufacturer, catalina380.org |
| Drain fuel filter (water/dirt) 4JH3E / 4JH3(B)E / 4JH3(C)E | 50 hrs or 1 mo | “4.3.2 Inspection Every 50 Hours (or Monthly) (1) Draining the Fuel Filter” — manufacturer, catalina380.org |
| Raw-water pump impeller 4JH3E / 4JH3(B)E / 4JH3(C)E | 1,000 hrs | “Note: The impeller must be replaced periodically (every 1000 hrs.).” — manufacturer, catalina380.org |
| Air filter / intake silencer 4JH3E / 4JH3(B)E / 4JH3(C)E | 300 hrs | “4.3.4 Inspection Every 300 Hrs. ... (5) Cleaning the Intake Silencer” — manufacturer, catalina380.org |
| Exhaust mixing elbow inspection 4JH3E / 4JH3(B)E / 4JH3(C)E | 300 hrs | “Every 300 hrs ... Clean the exhaust/water mixing elbow” — manufacturer, catalina380.org |
| Drive belts inspect / replace 4JH3E / 4JH3(B)E / 4JH3(C)E | 300 hrs | “4.3.4 Inspection Every 300 Hrs. ... (2) Adjusting the Tension of the Cooling Water Pump Driving Belt.” — manufacturer, catalina380.org |
| Valve clearance check / adjust 4JH3E / 4JH3(B)E / 4JH3(C)E | 600 hrs | “4.3.5 Inspection Every 600 Hrs. ... (3) Inspection and Adjustment of Intake/Exhaust Valve Clearance.” — manufacturer, catalina380.org |
| Injector test / service 4JH3E / 4JH3(B)E / 4JH3(C)E | 600 hrs | “4.3.5 Inspection Every 600 Hrs. ... (4) Inspecting and Adjusting the Fuel Injection Spray Condition.” — manufacturer, catalina380.org |
| Fuel filters & water separator 4JH2E / 4JH2-TE / 4JH2-HTE / 4JH2-DTE | 300 hrs | “Replace the element every 300 hours of operation.” — manufacturer, mason44.com |
| Replace engine oil filter 4JH2E / 4JH2-TE / 4JH2-HTE / 4JH2-DTE | 300 hrs | “Oil filter replacement period ... Every 300 hours of engine operation” — manufacturer, mason44.com |
| Transmission fluid change 4JH2E / 4JH2-TE / 4JH2-HTE / 4JH2-DTE | 150 hrs | “Change the oil after the first 50 hours of operation, and every 150 hours of operation thereafter.” — manufacturer, mason44.com |
| Air filter / intake silencer 4JH2-TE / 4JH2-HTE / 4JH2-DTE (turbo) | 300 hrs | “Cleaning and Every 300 hours inspection of air filter” — manufacturer, mason44.com |
| Turbocharger inspection 4JH2-TE / 4JH2-HTE / 4JH2-DTE (turbo) | 150 hrs | “Clean the blower: Everv 150 hours” — manufacturer, mason44.com |
| Turbocharger disassembly, cleaning and inspection 4JH2-TE / 4JH2-HTE / 4JH2-DTE (turbo) | 6,000 hrs or 1 yr | “3 months or 6 months or 12 months or 1500 hours 3000 hours 6000 hours ... Disassembly, cleaning and inspection of entire” — manufacturer, mason44.com |
| Thermostat: inspect every 500 h; replace every year or 2000 h 4JH2E / 4JH2-TE / 4JH2-HTE / 4JH2-DTE | 2,000 hrs or 1 yr | “Replace the thermostat every year or 2000 hours of operation (whichever comes first).” — manufacturer, mason44.com |
Service part numbers (11)
| Oil filter | Yanmar 129150-35170 Replaces 129150-35153 |
“129150-35170 Oil Filter” — dealer, oldportmarine.com · “Yanmar Oil Filter 129150-35170 Marine Diesel 4JH 4JHE 4JH3” — dealer, dieselitems.com |
| Fuel filter non-turbo E models (4JHE, 4JH2E, 4JH3E, 4JH4E) |
Yanmar 129470-55810 Replaces 129470-55703 |
“129470-55810 Fuel Filter” — dealer, oldportmarine.com · “It fits Yanmar 3HM35F, 3JH2E, 4JH3, 4JH4-HTE, 4JH4E, 4JHE, 4TNE84T engines. Cross Reference: 129470-55703” — dealer, deltadieselparts.com |
| Fuel filter 4JH4-TE / 4JH4-HTE (2007 on) |
Yanmar 129574-55711 | “Fuel Filter Element 1 129574-55711” — dealer, ellebogen.com · “4JH4-TE/HTE Basic Service Kit ... Fuel filter 129574-55711” — dealer, oldportmarine.com |
| Raw-water impeller JH3 and JH4 generation (4JH3, 4JH4-E, -AE, -TE, -HTE) |
Yanmar 129670-42531 | “Impeller 1 129670-42531 / Impeller Gasket 1 119773-42570” — dealer, ellebogen.com · “Impeller (129670-42531) & O-ring box kit, including face plate screws and lubricant.” — dealer, oldportmarine.com |
| Raw-water impeller earlier 4JH and 4JH2 generation |
Yanmar 129470-42532 | “Impeller 1 129470-42532 / Impeller Gasket 1 24341-000600” — dealer, ellebogen.com · “Replaces: Impeller Numbers 129470-42530 , 129470-42531 , 129470-42532 ... Fits ... 4JHE , 4JH-TE , 4JH2E” — dealer, staycoolpumps.com |
| Drive belt 4JH2E, 4JH3E, 4JH4-AE; 4JH4-TE before July 2006 |
Yanmar 25132-004600 | “Alternator Belt 1 25132-004600” — dealer, ellebogen.com · “25132-004600 Belt” — dealer, oldportmarine.com |
| Drive belt 4JH4-E |
Yanmar 25152-004300 | “Alternator Belt 1 25152-004300” — dealer, ellebogen.com · “25152-004300 Belt” — dealer, oldportmarine.com |
| Drive belt 4JH4-TE from July 2006 to serial E15601 (also 4JH4-HTE per Sea Sierra) |
Yanmar 129671-42280 | “Alternator Belt V-Belt 1 129671-42280 July 2006 > / < E15601” — dealer, ellebogen.com · “Alternator Belt for Yanmar 4JH4-TE and 4JH4-HTE (Replaces 129671-42280E, 129671-42280)” — dealer, seasierra.com |
| Drive belt 4JH4-TE / 4JH4-HTE from serial E15602 (120 A alternator) |
Yanmar 129671-77680 | “Alternator Belt Flat Belt 1 129671-77680 E15602 >” — dealer, ellebogen.com · “129671-77680 Serp Belt starting s/n # E15602” — dealer, oldportmarine.com |
| Air filter all except 4JH4-E |
Yanmar 129470-12330 | “Air Filter Element 1 129470-12330” — dealer, ellebogen.com · “It fits Yanmar 4JH110, 4JH2-TE, 4JH4-HTE, 4JH4-TE, 4JH80, 4JHE engines.” — dealer, deltadieselparts.com |
| Thermostat | Yanmar 129470-49801 | “Thermostat 1 129470-49801 / Thermostat Gasket 1 129795-49551 / 129150-49811” — dealer, ellebogen.com · “compatible with ... 4JH2-E, 4JH2-HTE, 4JH2-TE, ... 4JH3-E, 4JH3-HTE, 4JH3-TE, 4JH4AE, 4JH4-E, 4JH4-TE, ... 4JH-E” — dealer, shop.marinedieselinc.com |
From the engine maker’s parts lists, or two independent parts dealers. Numbers change with serial number and get superseded — check yours before ordering.
Model sources (6)
sailboatdata.com · murrayyachtsales.com · forums.sailboatowners.com · boattomorrow.com · facebook.com · sbo.sailboatowners.com
Own a Beneteau 423 (Oceanis 423)? Add her to your boats, then share a photo — names, numbers and faces are blurred before it appears.
Other Beneteau models
- Beneteau 331 (Oceanis 331) 1999–2004
- Beneteau 393 (Oceanis Clipper 393) 2002–2007
- Beneteau First 38s5 1989–1994
- Beneteau Oceanis 390 1987–?
Researched from public sources. Spotted an error? The sources are listed above — tell us what they got wrong.