Tutor Auto ignition tune-up kit distributor cap closeup showing durable brass contacts for reliable conductivity
Tutor Auto distributor cap closeup highlighting solid brass contacts for stable ignition performance
Tutor Auto rotor component closeup illustrating robust construction for long-lasting durability
Tutor Auto spark plug wires set closeup emphasizing high dielectric insulation and heat resistance
Tutor Auto kit packaging front view showcasing complete replacement kit for marine engines
Tutor Auto engine compatibility graphic with MerCruiser 3.0L label
Tutor Auto brass contacts closeup image focusing on OEM-like performance
Tutor Auto warranty info card and packaging detail
Tutor Auto ignition tune-up kit distributor cap closeup showing durable brass contacts for reliable conductivity
Tutor Auto distributor cap closeup highlighting solid brass contacts for stable ignition performance
Tutor Auto rotor component closeup illustrating robust construction for long-lasting durability
Tutor Auto spark plug wires set closeup emphasizing high dielectric insulation and heat resistance
Tutor Auto kit packaging front view showcasing complete replacement kit for marine engines
Tutor Auto engine compatibility graphic with MerCruiser 3.0L label
Tutor Auto brass contacts closeup image focusing on OEM-like performance
Tutor Auto warranty info card and packaging detail

Tutor Auto Ignition Tune-Up Kit for 3.0L MerCruiser GM Delco EST – Cap, Rotor & Wires

Overview Upgrade your marine ignition with Tutor Auto's Ignition Tune-Up Kit, designed for 3.0L 4-cylinder MerCruiser engines...
Vendor: Tutor Auto
Availability: In stock
£43.19
£43.19
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Subtotal: £43.19
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Tutor Auto ignition tune-up kit distributor cap closeup showing durable brass contacts for reliable conductivity

Tutor Auto Ignition Tune-Up Kit for 3.0L MerCruiser GM Delco EST – Cap, Rotor & Wires

£43.19
Tutor Auto ignition tune-up kit distributor cap closeup showing durable brass contacts for reliable conductivity
Tutor Auto distributor cap closeup highlighting solid brass contacts for stable ignition performance
Tutor Auto rotor component closeup illustrating robust construction for long-lasting durability
Tutor Auto spark plug wires set closeup emphasizing high dielectric insulation and heat resistance
Tutor Auto kit packaging front view showcasing complete replacement kit for marine engines
Tutor Auto engine compatibility graphic with MerCruiser 3.0L label
Tutor Auto warranty info card and packaging detail

Tutor Auto Ignition Tune-Up Kit for 3.0L MerCruiser GM Delco EST – Cap, Rotor & Wires

£43.19
Description
Description
x

Overview

Upgrade your marine ignition with Tutor Auto's Ignition Tune-Up Kit, designed for 3.0L 4-cylinder MerCruiser engines built by GM with Delco EST ignition systems. This kit provides a complete replacement path for wear items that naturally degrade over time, delivering a smoother running engine at sea. While not a genuine Mercury part, it offers a direct-fit alternative that aligns with OEM‑like performance and fit.

Key components work together to endure the heat, vibration, and salt air of marine use. The distributor cap uses tough PBT and PET plastics with brass contacts to resist arcing and wear. The rotor is engineered for reliability, and the spark plug wires feature a high dielectric insulator, heavy glass braid, and silicone jackets with rugged boots to handle elevated temperatures and harsh environments.

What’s inside

  • Distributor cap
  • Rotor
  • Spark plug wires set
  • Cross‑reference compatibility with GM Delco EST systems
  • 12‑month warranty for confidence

Why this kit matters

Ideal for routine maintenance, this kit helps keep ignition timing steady and combustion conditions consistent. Realistic results may include smoother idle, easier starts, and steadier throttle response when integrated into a regular tune‑up schedule. Marine use demands durable materials that resist arcing and degradation, and this kit is built with that in mind.

  • Direct‑fit replacement that meets OEM‑like standards
  • Durable materials designed for salt air and heat
  • Clear part number references to aid accurate shopping
  • 12‑month warranty and responsive support

Compatibility and installation tips

Before purchasing, confirm the exact part numbers: Distributor Cap and Rotor – 811635Q2, 811635Q1, 811635T2, 18-5280, 986643, 986651; Spark Plug Wires – 816761Q14, 84-816761Q14. This kit is intended for 3.0L 4‑cyl MerCruiser engines made by GM with Delco EST ignition systems, 1990 and newer. Follow standard marine tune‑up steps for a straightforward installation, and consult a marine technician if unsure.

FAQ

Q: Which engines and systems does this kit fit?

A: Designed for 3.0L 4‑cylinder MerCruiser engines with GM Delco EST; verify compatibility by cross‑checking part numbers.

Q: What does the kit include and is installation straightforward?

A: Includes distributor cap, rotor, and spark plug wires; direct‑fit replacement with straightforward install following standard marine tune‑up steps.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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