Beta Marine 45T
45 HP · Heat exchanger (freshwater / indirect) cooled
The Beta Marine 45T (Beta 45T) is a 45 hp turbocharged marine diesel built on the Kubota V1505 base block (Beta designation BV1505T). Turbocharging lifts output to 45 hp while keeping the same 1.5-litre displacement as the naturally aspirated Beta 35 and 38; it uses indirect injection and heat-exchanger freshwater cooling. It shares most service parts and the same maintenance schedule as the 35 and 38 — the main differences are the turbocharged air intake and a few installation specifics. Below are its published specifications, the manufacturer-recommended maintenance schedule, and the genuine Beta service-part numbers.
Specifications
| Engine type | 4-cylinder, turbocharged, indirect injection |
|---|---|
| Base engine | Kubota V1505T (BV1505T) |
| Displacement | 1498 cc (91.4 cu in) |
| Bore × stroke | 78.0 × 78.4 mm (3.07 × 3.09 in) |
| Compression ratio | 23.0 : 1 |
| Maximum output | 45 HP (33.4 kW) @ 3000 rpm |
| Maximum torque | 114.0 Nm @ 2000 rpm |
| Fuel | Diesel (EN590 / ASTM D975) |
| Fuel injection pressure | 140 kgf/cm² (1991 psi) |
| Injection timing | 18.0° BTDC |
| Starting aid | Glow plug |
| Firing order | 1-3-4-2 |
| Valve clearance (cold) | 0.165 mm (0.0064 in) |
| Oil pressure at idle | ≥ 0.69 kgf/cm² (≥ 9.9 psi) |
| Oil pressure at rated rpm | 3.0–4.5 kgf/cm² (43–64 psi) |
| Engine oil capacity | 6.7 L (1.77 US gal) standard sump · 5.0 L (1.32 US gal) shallow sump |
| Coolant capacity | 7.0 L (1.85 US gal) |
| Recommended starter battery | 70 Ah, 450 CCA |
| Dry weight | 175 kg (386.0 lb) |
Maintenance schedule
Beta Marine's recommended service intervals for this engine. Most items are time-or-hours, whichever comes first — boats that sit still hit the calendar interval long before the hours.
Daily, or every 8 hours of running
- Check engine oil level
- Check gearbox oil level
- Check coolant level
- Check battery electrolyte level
- Check drive-belt tension and alternator mounting bolts
- Confirm the raw-water inlet strainer is clear
- Check stern-gland lubrication (if fitted)
- Drain any water from the fuel/water separator
- Run the engine to temperature and check for leaks
After the first 25 hours (running-in)
- Change gearbox lubricant (see the separate gearbox manual)
- Re-check all external nuts, bolts and fastenings — especially the flexible-mount lock nuts, since loose mounts cause vibration and shaft misalignment
- Re-check and adjust drive-belt tension
- Check and grease the ball-joint nyloc nuts on the gearbox and throttle-control levers
After the first 50 hours (running-in)
- Change engine oil
- Change the oil filter
- Check the heat-exchanger tube-stack end caps for leaks and tighten if needed
- Drain any water from the fuel/water separator
After 150 hours
- If a shallow sump is fitted, change the engine oil and filter at this point
Every year or 250 hours, whichever comes first
- Change engine oil (standard sump)
- Change the oil filter
- Check the air-cleaner element
- Inspect the raw-water pump impeller and replace if worn
- Check the sacrificial anode and replace as needed
- Remove and clean the heat-exchanger tube stack, renew its O-rings, refill with correctly mixed antifreeze, and check for leaks
- Lubricate the key-switch barrel
- Re-check external fastenings and the ball-joint nyloc nuts
- Change the fuel filter
Every 500 hours (in addition to the 250-hour service)
- Change the air-cleaner element
Every 1500 hours
- Check valve clearances
- Check injector nozzle pressure
Genuine service parts
Beta Marine part numbers for the routine service items on this engine. Several vary by build date or cooling type — check the note before ordering. Genuine parts are stocked by the Beta Marine dealer network; where a cross-reference is shown, an aftermarket equivalent is also available.
| Fuel filter (spin-on element) | 211-60210 / 211-02817 ≈ WIX 33390 · Kubota 70000-43081 (for 211-60210) Two filters serve this range. Identify by your fuel-filter assembly: 211-60210 suits the square assembly with priming button (most heat-exchanger engines in this range); 211-02817 suits the round assembly. The bleed-bolt vs priming-button style matters too, so match your housing or quote your engine’s Beta “K” number to a dealer if unsure. |
|---|---|
| Engine oil filter | 211-60390 Standard engine-mounted spin-on filter. If a remote oil-filter kit is fitted, the element is 211-70510/02 instead. |
| Raw-water pump impeller kit | 207-09041-KIT Fits every Beta Marine, Johnson and side-mounted sea-water pump fitted from mid-2006 onward. Pre-2006 Jabsco pumps use impeller 207-79630 instead. Kit includes the cover O-ring. |
| Sacrificial zinc anode (heat exchanger) | 209-61840 Pencil anode in the heat-exchanger end cap. Replace at least annually — more often in warm or brackish water. A wasted anode lets the tube stack corrode. |
| Heat-exchanger tube-stack O-rings | 212-07273 Pair (qty 2) for the 3-bolt end caps — renew whenever the tube stack is pulled for cleaning. Single-bolt end caps use 209-80110 instead. |
| Air-cleaner element | 211-09179 Beta 45T turbocharged air-filter element (from 2016). The 35/38 element (211-08132) does not fit the turbocharged intake. |
| Alternator drive belt | Varies by configuration Configuration-dependent — Beta marks this “check before ordering”. A V-belt 600-94280/01 suits the 40 A alternator; a 6PK poly-vee 214-04618 suits most engines from Oct 2009. Confirm against your alternator and pulley set before ordering. |
| Thermostat | 600-72450 Thermostat; gasket is 600-80490. Replace on-condition if the engine runs cold or overheats. |
| Fuel lift pump | 600-67830 Mechanical lift pump; gasket is 600-00065. |
| Coolant pressure cap | 209-80130 Heat-exchanger filler / pressure cap. |
What owners watch
Turbocharger heat & engine-room ventilation
The 45T is turbocharged, so it runs hotter and Beta specifies more engine-room airflow than the naturally aspirated models (roughly 0.06 × hp versus 0.05). A hot, poorly-ventilated engine space is harder on the turbo and the whole engine — keep the compartment as cool and well-vented as the install allows.
Turbo warm-up and cool-down
As with any turbodiesel, letting the engine idle a minute or two before shutdown lets the turbo bearing shed heat instead of heat-soaking, and avoiding hard load until it is warm protects it. This is general turbocharged-diesel practice rather than a Beta-specific figure, but it is cheap insurance on an expensive part.
Gearbox oil cooler must be on the starboard side
Because of where the turbocharger sits, Beta requires the gearbox oil cooler to be mounted on the starboard side of the 45T. Worth knowing if you ever re-plumb the raw-water or gearbox-cooling circuit.
45T-specific air filter
The 45T uses its own air-filter element (211-09179) for the turbocharged intake — the 35/38 element (211-08132) will not fit. Easy to order the wrong one if you cross-shop within the range.
Raw-water impeller
The impeller sits on the annual / 250-hour list, but many owners inspect it more often — a shredded impeller can overheat the engine within minutes. Carry a spare (207-09041-KIT) and know where the raw-water pump is before you need it.
Fuel/water separator
Draining water from the separator is a daily-use item. On a boat that sits, water and diesel bug accumulate, and a watered or clogged filter is the most common no-start or power-loss cause on this engine.
Manufacturer documentation
The figures above are summarised for quick reference. For the full operator's manual and illustrated parts list, go straight to Beta Marine — they keep the current revision, so you always get the right version for your engine.
Beta revises these documents — always download the current revision for your engine from their site.
Other engines in this range
Never miss a Beta Marine 45T service
Keeply builds your engine's maintenance schedule, tracks the hours, and reminds you before a service is due. Ask First Mate "what's overdue?" and get an answer from your own records. Free to start, no credit card.
Track your Beta Marine 45T →Specifications and service intervals are summarised from Beta Marine published operator documentation (OM-221-20031) for the heat-exchanger-cooled range; service-part numbers are from Beta Marine’s Illustrated Parts List (IPL-221-10912, Rev 33). Figures are for reference only — Beta revises both documents, and several parts vary by build date, cooling type and serial number. Always confirm against the current manual and your engine’s own documentation before ordering parts or carrying out service.