New Manifold End Plate Compatible With Chrysler Marine Open 1973-1986 Chrysler Inboard V8 Lm318 M340

CHRYSLER MARINE INBOARD V8 APPLICATIONS (1973-1986):

SMALL BLOCK V8 ENGINES:
• Chrysler Marine Inboard 273 CID V8 (1973-1986)
• Chrysler Marine Inboard 318 CID V8 / LM318 (1973-1986)
• Chrysler Marine Inboard 340 CID V8 / M340 (1973-1986)
• Chrysler Marine Inboard 360 CID V8 / M360 (1973-1986)

VEHICLE SPECIFICATIONS:
• Engine: Chrysler Small Block V8 (LA Family)
• Displacement: 273 / 318 / 340 / 360 CID
• Configuration: Marine Inboard Engine (not I/O sterndrive)
• Production Era: 1973-1986 (13 model years)
• Both PORT and STARBOARD sides
• Universal application across all 273/318/340/360 V8 variants

PRODUCT TYPE:
• Manifold Front End Plate - OPEN TYPE
• Has 3/4" NPT hole/port
• Used at front of exhaust manifold body
• Provides sealed end cap with sensor/fitting access
• Cast/machined precision component
• CNC-machined mating surfaces for proper seal

OPEN vs BLOCKED DISTINCTION:
• 18-1942 = OPEN end plate (with 3/4" NPT hole) - THIS PRODUCT
• 18-1941 = BLOCKED end plate (no hole) - separate product
• Choose OPEN for sensor/fitting access
• Choose BLOCKED for sealed/non-access configuration
• Must match gasket type (open or blocked)

USE CASE SCENARIOS:
• Chrysler Marine V8 manifold rebuild
• Replace broken/cracked factory end plate
• Replace corroded end plate after saltwater exposure
• Restore exhaust seal integrity
• Routine manifold service/refresh

COMPANION PARTS (sold separately):
• Manifold Body — matches Chrysler 4142322 / 3675826
• End Cap Gasket — Open-type (REQUIRED with this end plate)
• Manifold Mounting Kit — bolts and hardware
• Exhaust Elbow Mounting Package

HISTORICAL CONTEXT:
• Chrysler Marine Inboard production era: 1966-1986
• 273/318/340/360 V8 platform shared with Mopar automotive lineup
• "LA" engine family (Light A-block) designation
• Log-style manifolds were standard 1973-1986
• Chrysler Marine ceased operations after 1986
• Aftermarket parts critical for ongoing Chrysler Marine ownership

OEM PART NUMBERS:
• Chrysler: 24695566 (8-digit OEM)
• Chrysler: 3675826 (7-digit OEM)
• MPN: 18-1942

CRITICAL FITMENT WARNINGS:
• OPEN END PLATE only - this product has 3/4" NPT hole
• Different from 18-1941 BLOCKED end plate (no hole)
• Use ONLY with open-type end cap gasket
• Fits Chrysler Marine INBOARD V8 ONLY (not I/O sterndrive)
• May also fit OMC marinized Chrysler small block V8 inboards
• Does NOT fit MerCruiser, Volvo Penta, OMC Cobra sterndrives
• Does NOT fit Chrysler 440 BIG block V8 (different manifold system)
• Verify your manifold uses the OPEN end plate configuration
• Both Port and Starboard sides use same end plate