Alumacraft Invader 175 2003 vs Alumacraft Magnum 165 CS 2005 - Boat Spec Comparison

Q: Which is easier to trailer — the Alumacraft Invader 175 2003 or the Alumacraft Magnum 165 CS 2005?

For trailering, the Alumacraft Invader 175 2003 has the edge at 12 lbs dry weight versus 903 lbs for the Alumacraft Magnum 165 CS 2005. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.

Q: Which boat can handle a bigger outboard?

The Alumacraft Invader 175 2003 is rated to a maximum of 115 hp, giving it the larger power ceiling. The Alumacraft Magnum 165 CS 2005 tops out at 90 hp. Keep in mind that maximum ratings are just that — matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.

Q: How many people can each boat hold?

The Alumacraft Invader 175 2003 is Coast Guard rated for 4 passengers, while the Alumacraft Magnum 165 CS 2005 is certified for 5. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.

Q: Which boat is wider, and does it affect trailering?

The Alumacraft Invader 175 2003 measures 88" wide, compared to 81" for the Alumacraft Magnum 165 CS 2005. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.

Q: Which boat has the larger fuel tank — the Alumacraft Invader 175 2003 or the Alumacraft Magnum 165 CS 2005?

The Alumacraft Invader 175 2003 has the bigger tank at 25 gallons, versus 22 gallons on the Alumacraft Magnum 165 CS 2005. That 3-gallon difference translates to roughly 9–15 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Alumacraft Invader 175 2003 and Alumacraft Magnum 165 CS 2005 from the same manufacturer?

Yes — both the Alumacraft Invader 175 2003 and the Alumacraft Magnum 165 CS 2005 are built by Alumacraft. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.

Boat Comparison

Alumacraft Invader 175 2003 vs Alumacraft Magnum 165 CS 2005

Alumacraft

Alumacraft Invader 175 2003

2003

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Alumacraft

Alumacraft Magnum 165 CS 2005

2005

View full specs →

Detailed Evaluation & Buyer Recommendation

Alumacraft Invader 175 2003 vs Alumacraft Magnum 165 CS 2005 — Same Brand, Different Boat

The Alumacraft Invader 175 2003 vs Alumacraft Magnum 165 CS 2005 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 115 hp, the Alumacraft Invader 175 2003 has a 25-hp advantage over the Alumacraft Magnum 165 CS 2005's 90-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 25 gal and 22 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Alumacraft Magnum 165 CS 2005 is rated for 5 passengers, while the Alumacraft Invader 175 2003 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Alumacraft Magnum 165 CS 2005 could be the deciding factor.

Bottom line: Choose the Alumacraft Magnum 165 CS 2005 if your priority is putting more people on the water — it handles 5 passengers and at 16,0 ft it has the deck room to back that rating up comfortably. The Alumacraft Invader 175 2003 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.

General Boat Info

MakeAlumacraft

ModelInvader 175

ModelMagnum 165 CS

Model Year2003

Model Year2005

Measurements / Dimensions

BeamBeam: 88 in. Bottom: 64 in

Beam81 in. (2.08 m)

Beam - Meters2.24

Beam - Meters2.06

Beam - Inches88

Beam - Inches81

Draft [drive up] - Detailn/a

Draft [drive up] - Detailnot available

Weight - Detail1200 lbs

Weight - Detail903 lbs. (410 kg)

Weight - kg544.31

Weight - kg409.59

Weight - lbs.12

Weight - lbs.903

Height - Detail23 in

Height - Detailnot available

Height - Meters0.58

Height - Metersnot available

Height - Inches23

Height - Inchesnot available

Height [transom]22 in. Width: 88 in

Height [transom]20 in. (.51 m)

Length overall - Detail17 ft. 5 in

Length overall - Detail16 ft. 5 in. (5.00 m)

Length overall - Meters5.31

Length overall - Meters5

Length overall - Inches209

Length overall - Inches197

Depth - Detailnot available

Depth - Detail36 in. (.91 m) Maximum to floor: 22 in. (.56 m)

Depth - Centimetersnot available

Depth - Centimeters91.44

Depth - Inchesnot available

Depth - Inches36

Width [transom] - Detailnot available

Width [transom] - Detail81 in. (2.05 m)

Length - Metersnot available

Length - Meters5

Length - Feetnot available

Length - Feet16

Length - Inchesnot available

Length - Inches5

Body / Hull

Hull materialAluminum

Hull materialnot available

Hull thicknessnot available

Hull thicknessBottom: .080 in. (2.0 mm) Sides: .065 in. (1.7 mm) 2XB Bow?2nd plate: .080 in

Engine and Drivetrain

Fuel tank capacity - Detail25 gal

Fuel tank capacity - Detail22 gal. (83 l)

Fuel tank capacity - Liters94.64

Fuel tank capacity - Liters83.28

Fuel tank capacity - Gal25

Fuel tank capacity - Gal22

Engine max115 hp

Engine max90 hp (67 kw)

Operational Info

Water capacityn/a

Water capacitynot available

Maximum people4 persons

Maximum people5

Trailer Info

Trailer - Detailn/a

Trailer - Detailnot available

Alumacraft Invader 175 2003 vs Alumacraft Magnum 165 CS 2005 — Common Questions

Which is easier to trailer — the Alumacraft Invader 175 2003 or the Alumacraft Magnum 165 CS 2005?

For trailering, the Alumacraft Invader 175 2003 has the edge at 12 lbs dry weight versus 903 lbs for the Alumacraft Magnum 165 CS 2005. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.

Which boat can handle a bigger outboard?

The Alumacraft Invader 175 2003 is rated to a maximum of 115 hp, giving it the larger power ceiling. The Alumacraft Magnum 165 CS 2005 tops out at 90 hp. Keep in mind that maximum ratings are just that — matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.

How many people can each boat hold?

The Alumacraft Invader 175 2003 is Coast Guard rated for 4 passengers, while the Alumacraft Magnum 165 CS 2005 is certified for 5. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.

Which boat is wider, and does it affect trailering?

The Alumacraft Invader 175 2003 measures 88" wide, compared to 81" for the Alumacraft Magnum 165 CS 2005. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.

Which boat has the larger fuel tank — the Alumacraft Invader 175 2003 or the Alumacraft Magnum 165 CS 2005?

The Alumacraft Invader 175 2003 has the bigger tank at 25 gallons, versus 22 gallons on the Alumacraft Magnum 165 CS 2005. That 3-gallon difference translates to roughly 9–15 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Alumacraft Invader 175 2003 and Alumacraft Magnum 165 CS 2005 from the same manufacturer?

Yes — both the Alumacraft Invader 175 2003 and the Alumacraft Magnum 165 CS 2005 are built by Alumacraft. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.

← Alumacraft Invader 175 2003 full specs ← Alumacraft Magnum 165 CS 2005 full specs