Direct fit Dodge Shadow compact car 1987-1994 (8 years US production). Dodge Shadow was Chrysler's compact 2-door/3-door/5-door hatchback and convertible built on Chrysler P-body platform (successor to K-Car L-body). Sister vehicle Plymouth Sundance (identical mechanical, different badging). Competed with Ford Tempo/Mercury Topaz, Chevrolet Cavalier/Pontiac Sunbird, Toyota Tercel/Corolla, Honda Civic, Mazda Protege, VW Jetta in mainstream compact car segment.
Body styles: 3-door hatchback (most common), 5-door hatchback (family use), 2-door convertible (limited production 1991-1994 with removable soft top, today considered collectible vintage Chrysler convertible). The Shadow hatchback architecture was distinctive with hidden rear hatch looking like sedan with trunk but functioning as hatchback for cargo versatility.
Engines: 2.2L K-Car I4 (~110 HP famous Chrysler engine across K-Car derived platforms), 2.5L K-Car I4 (~100 HP larger variant), 2.5L Turbo I4 (~152 HP Shadow ES sport trim, Shelby-tuned performance heritage including Daytona Shelby and Spirit R/T), 3.0L Mitsubishi 6G72 V6 (~141 HP Chrysler-Mitsubishi joint venture engine used in Voyager/Caravan minivans Batch 55 vaz510 reference). Transmissions: A413 3-speed automatic (K-Car era), A604 Ultradrive 4-speed automatic (notorious reliability issues, class-action settlement Batch 55 vaz510 reference), 5-speed manual. FWD only throughout production.
Shadow ES sport variant: sport-tuned with 2.5L Turbo I4, sport suspension, body cladding, sport wheels - performance-oriented competing with VW GTI, Honda CRX, Toyota Corolla GT-S hot hatches. Trim levels: Base, ES (sport), Highline (premium comfort), Competition Edition (special editions). Discontinued 1994, replaced by Dodge Neon 1995+ with newer PL platform ending K-Car derived architecture era.
K-Car heritage: Shadow's P-body platform was FINAL ERA of K-Car derived architecture lineage (L-Body Omni/Horizon 1978-1990 → K-Body Aries/Reliant 1981-1989 → P-Body Shadow/Sundance 1987-1994). The K-CAR PLATFORM WAS LEE IACOCCA'S CHRYSLER RECOVERY saving the company from bankruptcy in late 1970s/early 1980s by providing affordable American compact car alternative to devastating Japanese imports. Iacocca's $1.5 BILLION FEDERAL LOAN GUARANTEE 1979 funded K-Car development. K-Car success saved Chrysler allowing continued operation through 1980s-1990s era of successful K-Car derivatives: minivans (Caravan/Voyager - 1984 Chrysler minivan revolution Batch 55 vaz510), sedans (LeBaron, New Yorker, Aries, Reliant), convertibles (LeBaron Convertible, Shadow Convertible), and compacts including Shadow.
Master cylinder definition: brake hydraulic component that converts mechanical force from brake pedal into hydraulic pressure pushing brake fluid through brake lines to brake calipers (disc brakes) and/or wheel cylinders (drum brakes). Functions: pedal input → piston actuation (primary and secondary pistons) → fluid displacement → hydraulic pressure (1000+ PSI under hard braking) → brake application via caliper/wheel cylinder pistons. Fluid reservoir stores brake fluid (DOT 3 or DOT 4 glycol-based, typically yellow/brown when fresh).
Construction: aluminum or cast iron body with internal bore for piston movement and mounting provisions to brake booster. DUAL-CIRCUIT DESIGN (federal mandate 1968+) with two separate hydraulic circuits to front and rear brakes for backup braking capability if one circuit fails. Primary piston (operated by pushrod from brake pedal/booster), secondary piston (operated by primary through hydraulic pressure), return springs, plastic reservoir mounted on top or remote, brake warning light switch for pressure loss detection.
Common failure modes: (1) Internal seal failure - rubber seals between pistons wear allowing fluid bypass (most common, causes brake pedal sinking to floor during hold), (2) External leak from body or reservoir connections, (3) Reservoir crack from age/heat, (4) Piston sticking from corrosion/debris, (5) Fluid contamination (old brake fluid absorbs moisture, should be flushed every 2-3 years), (6) Bore wear over time.
Inspection signs: brake pedal slowly sinks to floor when held pressed, spongy/soft brake pedal, brake warning light illuminated, visible brake fluid leak near master cylinder, brake fluid level drops repeatedly without external leak, reduced braking performance. Replacement is moderate DIY (~2-4 hours including bleeding entire brake system). SAFETY-CRITICAL component - professional installation recommended.
| Detail | Description |
|---|---|
| Dodge Shadow 1987-1994 (All Years) | Chrysler P-body compact |
| Dodge Shadow ES 1987-1994 | Sport variant with 2.5L Turbo |
| Dodge Shadow Highline 1987-1994 | Premium trim |
| Dodge Shadow Convertible 1991-1994 | Limited production collectible |
| Engine Specific: | |
| 2.2L K-Car I4 Equipped | Standard master cylinder |
| 2.5L K-Car I4 Equipped | Standard master cylinder |
| 2.5L Turbo I4 Equipped (Shadow ES) | Possibly upgraded brake system |
| 3.0L Mitsubishi V6 Equipped | Verify configuration |
| Transmission Specific: | |
| Manual Transmission Equipped | Same master cylinder typically |
| Automatic Transmission Equipped | Same master cylinder typically |
| ABS Specific: | |
| Non-ABS Models (Most Years) | Standard master cylinder |
| ABS Models (Later Years Optional) | Verify ABS-specific master cylinder |
| Sister Vehicle: | |
| Plymouth Sundance 1987-1994 | Same master cylinder (sister vehicle) |
| Plymouth Sundance Duster Sport Trim | Sister to Shadow ES |
| Related K-Car Platform: | |
| Some K-Car L-Body/K-Body May Share | Verify specific application |
| Sister Plymouth Sundance Donor Pool | Doubles available sources |
| NOT Compatible: Dodge Neon (1995+) | Different PL platform successor |
| NOT Compatible: Pre-1987 Dodge Compact | Different platform |
Call (240) 301-0095. Critical questions: (1) Year (1987-1994). (2) Engine (2.2L K-Car I4, 2.5L K-Car I4, 2.5L Turbo, 3.0L V6 - matters for booster matching). (3) Transmission (manual or automatic - usually same master cylinder). (4) ABS or non-ABS (later models had optional ABS). (5) Trim level (Shadow ES with turbo may have upgraded brake system). (6) Body style (hatchback or convertible - usually same master cylinder).
| Part Type | Brake master cylinder (hydraulic) |
|---|---|
| Vehicle | Dodge Shadow 1987-1994 |
| Production | 8 years US (Chrysler P-body compact) |
| Sister | Plymouth Sundance (identical mechanical) |
| Platform | K-Car derived P-body |
| Body Styles | 3-door hatchback, 5-door hatchback, 2-door convertible |
| Engines | 2.2L/2.5L K-Car I4, 2.5L Turbo (ES), 3.0L Mitsubishi V6 |
| Transmissions | A413, A604 Ultradrive, 5-speed manual |
| Drivetrain | FWD only |
| Trim Levels | Base, ES (sport turbo), Highline, Competition |
| Successor | Dodge Neon 1995+ |
| Cylinder Type | Dual-circuit (federal mandate 1968+) |
| Body Material | Aluminum or cast iron |
| Reservoir | Plastic with level indicator |
| Brake Fluid | DOT 3 or DOT 4 glycol-based |
| Pressure | 1000+ PSI under hard braking |
| Common Failure | Internal seal failure, external leak, reservoir crack |
| Safety Status | Safety-critical component |
| Approximate Weight | 2 to 4 lbs |
Contact (240) 301-0095 within 15 days of delivery.
