CamperHardlyKnowHer

Jayco Seismic 405

Fifth wheelbuilt 2023–23Mixed build tierFindable on the used market
WHAT ONE COSTS
$76,100est. used (2023, 3 yr old)

Sticker was $105,105 in 2023 — out of production since 2023, so the used market is the only way to buy one. Estimate assumes a 2023 unit.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~15,219 lbestimated as towed, for 2 people

dry weight 13,535 lb + fresh water (106 gal, full) 884 lb + propane + battery 200 lb + gear for 2 600 lb. Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.

You want a tow rating around16,910 lb (10% margin)
GVWR (the sticker maximum)16,955 lb
Tongue weight, loaded~3,216 lb (21%)
Cargo capacity3,460 lb
WHICH TOW VEHICLES IT FITS — 18 OF 95

Judged the way the app judges: estimated loaded weight against each vehicle's rating less a 10% margin — per model year, because the 405's published weights held steady. Fifth wheels also need a pickup bed and are held to the fifth-wheel rating where published.

VEHICLETOW RATINGVERDICT
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-2622,500 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-2318,510 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-1918,100 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-2636,000 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-1923,300 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-2222,800 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-1918,000 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-2623,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-2237,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-1932,500 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-1621,600 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2638,000 lbfits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2640,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins HO) '19-2620,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins) '11-1817,980 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-1831,210 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-2636,610 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-2437,090 lbfits, loaded, with 10% margin
The 77it doesn't fit
  • Chevrolet Colorado / GMC Canyon (2.7 Turbo HO, tow pkg) '23-26 — over by ~8,289 lb loaded
  • Chevrolet Colorado / GMC Canyon (2.8 Duramax) '15-22 — over by ~8,289 lb loaded
  • Chevrolet Silverado / GMC Sierra 1500 (6.2 V8, max tow) '19-26 — over by ~5,949 lb loaded
  • Chevrolet Silverado 1500 (max tow) '14-18 — over by ~4,779 lb loaded
  • Chevrolet Silverado EV (4WT) '24-26 — over by ~3,969 lb loaded
  • Chevrolet Suburban (5.3 V8, max tow) '21-26 — no pickup bed — cannot hitch a fifth wheel
  • Chevrolet Tahoe (5.3 V8, max tow) '21-26 — no pickup bed — cannot hitch a fifth wheel
  • Chevrolet Traverse (tow pkg) '18-26 — no pickup bed — cannot hitch a fifth wheel
  • Chrysler Pacifica '17-26 — no pickup bed — cannot hitch a fifth wheel
  • Dodge Durango (5.7 / 6.4 Hemi, tow pkg) '14-26 — no pickup bed — cannot hitch a fifth wheel
  • Ford Bronco 4-dr (2.7 EcoBoost, tow pkg) '21-26 — no pickup bed — cannot hitch a fifth wheel
  • Ford Expedition (3.5 EcoBoost, tow pkg) '18-24 — no pickup bed — cannot hitch a fifth wheel
  • Ford Expedition (3.5 EcoBoost, tow pkg) '25-26 — no pickup bed — cannot hitch a fifth wheel
  • Ford Explorer (3.0 EcoBoost, tow pkg) '20-26 — no pickup bed — cannot hitch a fifth wheel
  • Ford F-150 (3.5 EcoBoost, max tow) '24-26 — over by ~5,499 lb loaded
  • Ford F-150 (3.5 EcoBoost, max tow) '11-14 — over by ~5,049 lb loaded
  • Ford F-150 (3.5 EcoBoost, max tow) '15-20 — over by ~4,509 lb loaded
  • Ford F-150 (3.5 EcoBoost, max tow) '21-23 — over by ~2,619 lb loaded
  • Ford F-150 Lightning (max trailer tow) '22-26 — over by ~6,219 lb loaded
  • Ford F-250 Super Duty (6.7 diesel) '11-16 — over by ~279 lb loaded
  • Ford Maverick (2.0 EcoBoost, 4K tow pkg) '22-26 — over by ~11,619 lb loaded
  • Ford Ranger (2.3 EcoBoost, tow pkg) '19-23 — over by ~8,469 lb loaded
  • Ford Ranger (2.7 EcoBoost, tow pkg) '24-26 — over by ~8,469 lb loaded
  • Ford Transit (HD tow pkg) '15-26 — no pickup bed — cannot hitch a fifth wheel
  • GMC Acadia (tow pkg) '20-26 — no pickup bed — cannot hitch a fifth wheel
  • GMC Hummer EV Pickup '22-26 — over by ~8,469 lb loaded
  • GMC Sierra EV '24-26 — over by ~4,419 lb loaded
  • GMC Yukon / Yukon XL (5.3 V8, max tow) '21-26 — no pickup bed — cannot hitch a fifth wheel
  • Honda Odyssey '18-26 — no pickup bed — cannot hitch a fifth wheel
  • Honda Passport (AWD) '19-26 — no pickup bed — cannot hitch a fifth wheel
  • Honda Pilot (AWD, tow pkg) '16-26 — no pickup bed — cannot hitch a fifth wheel
  • Honda Ridgeline (AWD) '17-26 — over by ~10,719 lb loaded
  • Hyundai Palisade (tow pkg) '20-26 — no pickup bed — cannot hitch a fifth wheel
  • Hyundai Santa Cruz (2.5T AWD) '22-26 — over by ~10,719 lb loaded
  • Jeep Gladiator (3.6 V6, max tow) '20-26 — over by ~8,289 lb loaded
  • Jeep Grand Cherokee (5.7 Hemi) '11-21 — no pickup bed — cannot hitch a fifth wheel
  • Jeep Grand Cherokee (WL, tow pkg) '22-26 — no pickup bed — cannot hitch a fifth wheel
  • Jeep Grand Cherokee L (5.7 Hemi) '21-26 — no pickup bed — cannot hitch a fifth wheel
  • Jeep Grand Wagoneer (Hurricane, max tow) '22-26 — no pickup bed — cannot hitch a fifth wheel
  • Jeep Wagoneer (Hurricane, max tow) '22-26 — no pickup bed — cannot hitch a fifth wheel
  • Jeep Wrangler Unlimited 4-dr (tow pkg) '18-26 — no pickup bed — cannot hitch a fifth wheel
  • Kia Telluride (tow pkg) '20-26 — no pickup bed — cannot hitch a fifth wheel
  • Land Rover Defender '20-26 — no pickup bed — cannot hitch a fifth wheel
  • Land Rover Discovery '17-26 — no pickup bed — cannot hitch a fifth wheel
  • Lexus GX 550 (tow pkg) '24-26 — no pickup bed — cannot hitch a fifth wheel
  • Lexus LX 600 '22-26 — no pickup bed — cannot hitch a fifth wheel
  • Mazda CX-90 (3.3 turbo, tow pkg) '24-26 — no pickup bed — cannot hitch a fifth wheel
  • Mercedes-Benz Sprinter '19-26 — no pickup bed — cannot hitch a fifth wheel
  • Nissan Armada (3.5 twin-turbo, tow pkg) '25-26 — no pickup bed — cannot hitch a fifth wheel
  • Nissan Armada (tow pkg) '17-24 — no pickup bed — cannot hitch a fifth wheel
  • Nissan Frontier (3.8 V6, tow pkg) '22-26 — over by ~8,784 lb loaded
  • Nissan Pathfinder (tow pkg) '22-26 — no pickup bed — cannot hitch a fifth wheel
  • Nissan Titan (5.6 V8, tow pkg) '17-24 — over by ~6,434 lb loaded
  • Nissan Titan XD (Cummins diesel) '16-19 — over by ~3,779 lb loaded
  • Ram 1500 (3.0 Hurricane, max tow) '25-26 — over by ~4,769 lb loaded
  • Ram 1500 (5.7 Hemi eTorque, max tow) '19-24 — over by ~3,744 lb loaded
  • Ram 1500 (5.7 Hemi, max tow) '11-18 — over by ~5,659 lb loaded
  • Ram ProMaster '14-26 — no pickup bed — cannot hitch a fifth wheel
  • Rivian R1S '22-26 — no pickup bed — cannot hitch a fifth wheel
  • Rivian R1T '22-26 — over by ~5,319 lb loaded
  • Subaru Ascent '19-26 — no pickup bed — cannot hitch a fifth wheel
  • Subaru Outback (XT / Wilderness) '20-26 — no pickup bed — cannot hitch a fifth wheel
  • Tesla Cybertruck '24-26 — over by ~5,319 lb loaded
  • Tesla Model X (tow pkg) '16-26 — no pickup bed — cannot hitch a fifth wheel
  • Tesla Model Y (tow pkg) '21-26 — no pickup bed — cannot hitch a fifth wheel
  • Toyota 4Runner (4.0 V6) '11-24 — no pickup bed — cannot hitch a fifth wheel
  • Toyota 4Runner (i-Force Max) '25-26 — no pickup bed — cannot hitch a fifth wheel
  • Toyota Grand Highlander (i-Force Max) '24-26 — no pickup bed — cannot hitch a fifth wheel
  • Toyota Highlander (tow pkg) '20-26 — no pickup bed — cannot hitch a fifth wheel
  • Toyota Land Cruiser (i-Force Max) '24-26 — no pickup bed — cannot hitch a fifth wheel
  • Toyota Sequoia (i-Force Max, tow pkg) '23-26 — no pickup bed — cannot hitch a fifth wheel
  • Toyota Sienna '21-26 — no pickup bed — cannot hitch a fifth wheel
  • Toyota Tacoma (i-Force Max, tow pkg) '24-26 — over by ~9,369 lb loaded
  • Toyota Tacoma (V6, tow pkg) '16-23 — over by ~9,099 lb loaded
  • Toyota Tundra (5.7 V8, tow pkg) '11-21 — over by ~6,039 lb loaded
  • Toyota Tundra (i-Force Max, tow pkg) '22-26 — over by ~4,419 lb loaded
  • Volkswagen Atlas (tow pkg) '18-26 — no pickup bed — cannot hitch a fifth wheel
THE SPECS
Length41.4 ft
Height (incl. A/C)13.3 ft
Width8.5 ft
GVWR16,955 lb
Dry weight13,535 lb
Dry tongue weight2,860 lb
Cargo capacity3,460 lb
Sleeps9
Axles2
Fresh water106 gal
Grey water87 gal
Black water87 gal
Awning21 ft

A missing row means the maker never published that figure — unknown, not zero.

WHERE PEOPLE SLEEP
  • 1× Front bedroom queen(Permanent)—
  • 1× HappiJac electric-lift queen in garage(Stow-away)—
  • 2× Garage opposing convertible sofas(Convertible)—
  • 1× Free-standing dinette(Convertible)—
HOW IT'S BUILT — 4/5
WallsLaminated fiberglass
FrameSteel
RoofWalk-on
UnderbellyEnclosed

Jayco (Mixed tier): Jayco

YEAR BY YEAR — WHAT CHANGED
  • 2023Introduced
  • 2024Discontinued
FINDING ONE

Findable — a few listed nationwide most weeks. Why: Jayco is a volume manufacturer; only one model year. Estimated from build volume and production span — not a count of live listings.

THE READ

One-year plan with an 11'6" garage and the highest sleeps rating of its era at nine.

OTHER SEISMIC FLOORPLANS
359 · 17,500 lb · sleeps 6395 · 21,000 lb · sleeps 7399 · 21,000 lb · sleeps 8403 · 16,500 lb · sleeps 7413 · 20,800 lb · sleeps 6the whole line →
Is the 405 your #1 — or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about — set your priorities as sliders and watch the whole market re-rank around them. Nothing gets hidden, everything gets explained.

Rank it against your setup →

Data compiled from manufacturer spec sheets, retrieved 2026-07.