Detailed Evaluation & Buyer Recommendation
Sea Ray 300 Select EX 2008 vs Sea Ray SLX 400 2023 — Same Brand, Different Boat
The Sea Ray 300 Select EX 2008 vs Sea Ray SLX 400 2023 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
The power gap is worth calling out. Rated to 380 hp, the Sea Ray SLX 400 2023 has a 60-hp advantage over the Sea Ray 300 Select EX 2008's 320-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sea Ray SLX 400 2023 carries 25 gallons versus 13 gallons in the Sea Ray 300 Select EX 2008. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Sea Ray SLX 400 2023 is rated for 12 passengers, while the Sea Ray 300 Select EX 2008 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray SLX 400 2023 could be the deciding factor.
Bottom line: Choose the Sea Ray SLX 400 2023 if your priority is putting more people on the water — it handles 12 passengers and at 39,6 ft it has the deck room to back that rating up comfortably. The Sea Ray 300 Select EX 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.
General Boat Info
MakeSea Ray
Makenot available
Model300 Select EX
Modelnot available
Model Year2008
Model Yearnot available
Measurements / Dimensions
Beam9 ft. 8 in. (2.95 m)
Beam12.10 ft
Beam - Meters2.95
Beam - Meters3.69
Beam - Inches116
Beam - Inches145
Deadrise21℃
Deadrisenot available
Draft [drive up] - Detail23 in. (58.4 cm)
Draft [drive up] - Detailnot available
Draft [drive up] meters0.58
Draft [drive up] metersnot available
Draft [drive up] inches23
Draft [drive up] inchesnot available
Draft [max] - Detail38 in. (96.5 cm)
Draft [max] - Detail4.40 ft
Draft [max] - Meters0.97
Draft [max] - Meters1.34
Draft [max] - Inches38
Draft [max] - Inches53
Length - Meters8.99
Length - Metersnot available
Length - Feet29
Length - Feet39.6
Length - Inches6
Length - Inchesnot available
Length [over all with swim platform]32 ft. 2 in. (9.80 m)
Length [over all with swim platform]not available
Length overall - Detail29 ft. 6 in. (8.99 m)
Length overall - Detail39.60 ft
Length overall - Meters8.99
Length overall - Meters12.07
Length overall - Inches354
Length overall - Inches475
Draft Minnot available
Draft Min3.30 ft
Displacementnot available
Displacement20794.00 lbs
Body / Hull
Hull materialFiberglass
Hull materialnot available
Hull typeModified Vee
Hull typenot available
Engine and Drivetrain
Engine/s standard496 Magnum? Bravo? III MCM DTS - 375 hp (280 kW)
Engine/s standardnot available
Fuel tank capacity - Detail130 gal. (492.1 l)
Fuel tank capacity - Detailnot available
Fuel tank capacity - Liters492.1
Fuel tank capacity - Liters946.35
Fuel tank capacity - Gal13
Fuel tank capacity - Gal25
Drive typeI/O
Drive typenot available
Engine maxTwin 320 hp (239 kW)
Engine maxnot available
Engine makenot available
Engine makeMercruiser
Engine modelnot available
Engine model8.2 MAG ECTBravo
Horsepowernot available
Horsepower380 hp
Engine 2 Engine Makenot available
Engine 2 Engine MakeMercruiser
Engine 2 Engine Modelnot available
Engine 2 Engine Model8.2 MAG ECTBravo
Engine 2 Horsepowernot available
Engine 2 Horsepower380 hp
Operational Info
Holding tank capacity - Detail20 gal. (75.7 l)
Holding tank capacity - Detailnot available
Holding tank capacity - Liters75.71
Holding tank capacity - Litersnot available
Holding tank capacity - Gal2
Holding tank capacity - Galnot available
Sleeping capacitynot available
Sleeping capacity4
Cabinsnot available
Cabins1
Water capacitynot available
Water capacity5
Boat typenot available
Boat typePower