Your 5.7's rear main seal has hardened and let go, and the only way in is transmission-out. We do the whole job at your home, and inspect the flex plate — a known HEMI weak point — while everything's apart.
The rear main seal rides the back of the crankshaft, sealing engine oil right at the point where the engine bolts to the transmission. It's rubber living against a spinning crank in constant heat, and on these 5.7 HEMI cars age does what age does: the seal hardens, loses its flexibility, and stops sealing. The leak shows up exactly where you can't see it without getting underneath — in the bellhousing gap between engine and transmission — and slowly paints the underside of the car.
There's no shortcut to this seal. The transmission has to come out to reach it, which is why so many owners get quoted big and put it off. The silver lining: on a rear-wheel-drive Charger or Challenger, the trans drop is a clean, straightforward job — no all-wheel-drive transfer case, no subframe gymnastics.
And while the transmission is out, the flex plate — the thin steel plate connecting crank to torque converter — gets a proper inspection, because these crack on HEMIs. A cracking plate makes a knock or vibration at idle that's often misdiagnosed, and it can chew at the area around the trans front seal, which is where an ATF smell comes from. Checking it costs nothing extra while everything's apart; missing it means doing this entire trans-out job twice.
If your Dodge is doing any of these, this is the likely cause:
A rear main leak rarely strands you — it bleeds you. Oil drips onto the exhaust, the level creeps down between changes, and if you're the type who doesn't check the dipstick monthly, a slow leak can quietly become low-oil bearing wear on an otherwise healthy engine. The flex plate angle is the sharper risk: a cracking plate gets worse with every start cycle, and a fully failed one can leave you with a car that cranks but won't move.
Yes. With a proper transmission jack and supports, a RWD trans drop is methodical work, not shop-only magic. We need flat, solid ground and a day. The car never leaves your home, and you're not paying anyone's storage-and-shuttle overhead.
The seal itself is one of the least expensive parts on the car — the bill is the labour to remove and reinstall the transmission to reach it. That's also why doing it right the first time matters: every related check (flex plate, trans front seal) should happen during this one disassembly. We quote one flat price for the complete job, told to you before any work starts.
It's the steel plate that connects your crankshaft to the torque converter. HEMI flex plates are known to crack, and the symptoms — idle vibration, a light knock — overlap with other issues, so cracks go undiagnosed. Inspecting it while the trans is out is free insurance against doing this whole job again in six months.
Location and pattern. Rear main oil collects in the bellhousing gap and drips mid-car; valve cover or oil pan leaks track differently. We confirm the source before quoting — cleaning the area, dye if needed — because dropping a transmission to fix the wrong leak helps nobody.
Send it over for a free second opinion. I'll tell you straight what the job actually involves — and if their quote is fair, I'll tell you that too.
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