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Rebuilt Mercedes 420 Engine for sale



Rebuilt Mercedes 420 Engine for sale

Rebuilt Mercedes 420 Engine for sale. The Mercedes-Benz 420 series, including the iconic 420SEL and 420SEC, represents a golden era of German engineering—known for refined luxury and powerful V8 performance. If your vehicle’s engine is showing signs of wear, a rebuilt Mercedes 420 engine offers a reliable, cost-effective way to restore your car’s performance, value, and driveability.

At First Used Auto Parts, we offer high-quality rebuilt Mercedes 420 engines built to meet or exceed OEM specifications. With nationwide shipping and a reputation for excellence, we’re your trusted source whether you’re in Los Angeles, San Diego, Houston, Chicago, or anywhere across the U.S.

Why Choose a Rebuilt Mercedes 420 Engine? Rebuilt Mercedes 420 Engine for sale.

Your Mercedes 420 was built to last—but even the most durable V8s need a rebuild after decades on the road. A rebuilt engine is more than just a repair—it’s a complete refresh of performance, reliability, and peace of mind.

✅ Factory-Level Restoration at a Fraction of the Cost

Our rebuilt Mercedes 420 engines go through a rigorous remanufacturing process using OEM-grade or better parts to bring them back to life:

  • New pistons and rings

  • Rod and main bearings

  • Refurbished cylinder heads with new valves and seals

  • Replaced timing chain, guides, and tensioner

  • Complete set of gaskets and seals

  • Thorough crankshaft balancing and machining

This meticulous rebuild ensures your engine runs like it did when it first left the factory—smooth, strong, and dependable.

Engine Overview: Mercedes 420

We specialize in rebuilding the legendary M116 4.2L V8 engine, which powered several flagship Mercedes models from the late 1980s and early 1990s, including:

  • 420SEL (W126 chassis)

  • 420SEC (C126 coupe)

  • Other 4.2L V8-powered models (U.S. and Euro specs)

Specs:

  • M116.965 V8

  • 4.2 liters displacement

  • SOHC aluminum head

  • EFI (Electronic Fuel Injection)

  • Power output: ~204–218 HP (varies by market/year)

What’s Included in Our Rebuild?

Each engine is fully remanufactured, not just repaired. We follow a detailed multi-step rebuild process:

  1. Disassembly & Cleaning – Every part is inspected, cleaned, and prepped

  2. Machining & Resurfacing – Cylinder bores, crank journals, heads, and valves are precision-machined

  3. Component Replacement – Pistons, rings, timing chain, gaskets, bearings, oil pump, and more

  4. Reassembly – Engine is reassembled using calibrated torque specs

  5. Testing & Quality Control – Compression tested, leak-down tested, and quality-inspected

The result: a like-new engine that performs with confidence.

Warranty & Technical Support

Every rebuilt Mercedes 420 engine comes with a limited warranty that protects against defects in parts and workmanship. Plus, our support team is here to help you through the entire process:

  • Installation support and torque specs

  • Engine compatibility guidance

  • Recommendations for certified Mercedes technicians

How to Order Your Rebuilt Mercedes 420 Engine

Step 1: Gather Your Vehicle InfoWe’ll need your model, year, and VIN to verify the correct M116 engine variant for your vehicle.

Step 2: Request a QuoteContact us to get a free, no-obligation quote that includes pricing, warranty details, and shipping options.

Step 3: Delivery to Your DoorWe offer insured nationwide shipping, including all of California and major cities across the U.S.

Nationwide Delivery – California & Beyond

From Los Angeles to Miami, Phoenix to New York, we ensure your rebuilt engine arrives safe, secure, and ready for installation. Engines are crated for protection and shipped with full tracking.

Need help with the install? We can connect you with reputable Mercedes repair shops near you.

Why Buy from First Used Auto Parts?

  • ✅ Expert Rebuild Technicians with experience in Mercedes-Benz V8s

  • ✅ OEM-Spec Parts & Processes

  • ✅ Affordable Pricing compared to new crate engines

  • ✅ Fast, Reliable Shipping Nationwide

  • ✅ Warranty-Backed Confidence

  • ✅ Knowledgeable Customer Support from start to finish

Get Your Mercedes 420 Back on the Road

Your 420SEL or 420SEC deserves to run like new—and a rebuilt Mercedes 420 engine from First Used Auto Parts delivers the quality and performance you expect from a brand that stands for excellence.

👉 Contact us today to request your quote and take the first step toward restoring your Mercedes-Benz to its full glory.

Call to Action:Don’t let engine wear hold your classic Benz back. Call First Used Auto Parts today for a rebuilt Mercedes 420 engine—reliable, powerful, and priced right.

 
 
 

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