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Description
Spark Plug Wire Set – Fits Mercruiser and Volvo Penta 5.0L, 5.7L Sterndrive Motors (Replaces 3888328, 816608Q61)Spark Plug Wire Set Fits Mercruiser and Volvo Penta 5. 0L, 5. 7L Sterndrive Motors (Replaces 3888328, 816608Q61) This spark plug wire set is compatible with Mercruiser V8 5. 0L and 5. 7L GM MPI sterndrive engines featuring Thunderbolt ignition systems. It is also designed for Volvo Penta V8 5. 0L and 5. 7L GXI, GI, OSI sterndrive engines equipped with flat top distributors. It serves as a direct replacement for multiple OEM part numbers including
Spark Plug Wire Set – Fits Mercruiser and Volvo Penta 5.0L, 5.7L Sterndrive Motors (Replaces 3888328, 816608Q61)
This spark plug wire set is compatible with Mercruiser V8 5.0L and 5.7L GM-MPI sterndrive engines featuring Thunderbolt ignition systems. It is also designed for Volvo Penta V8 5.0L and 5.7L GXI, GI, OSI sterndrive engines equipped with flat top distributors.
It serves as a direct replacement for multiple OEM part numbers including Volvo 3888328 and Mercruiser 816608Q61 among others, ensuring fit and function for these marine engines.
- Package contents: 9 spark plug wires of varied lengths
- Fuel type compatibility: Gasoline
- Installation method: Direct fit replacement with plug-in terminal connectors
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number | Notes |
|---|---|---|
| Volvo | 3888328 | |
| Volvo | 3859000 | |
| Mercruiser | 816608Q61 | |
| Mercruiser | 816608A61 | |
| Mercruiser | 816761A15 | |
| Mercruiser | 816761A2 | |
| Mercruiser | 813720A2 | |
| Mercruiser | 43376A2 | |
| Mercruiser | 42841A5 | |
| Mercruiser | 43376A1 | |
| Mercruiser | 43376A14 | |
| Mercruiser | 816608Q83 | |
| Mallory | 9-28001 | |
| Mallory | 9-28002 | |
| Sierra | 18-8804 |
Compatible Engine Models
Confirm your engine model/year in the table below. For Mercruiser owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.
Confirm your engine model/year in the table below. For Volvo Penta owners, here’s a guide to help you identify your engine’s serial/model: Johnson Serial Number Guide.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Mercruiser | V8 5.0L GM-MPI Sterndrive | 5.0L | 4-Stroke | 816608Q61 | |
| Mercruiser | V8 5.7L GM-MPI Sterndrive | 5.7L | 4-Stroke | 816608Q61 | |
| Volvo Penta | V8 5.0L GXI | 5.0L | 4-Stroke | 3888328 | Requires flat top distributor |
| Volvo Penta | V8 5.0L GI | 5.0L | 4-Stroke | 3888328 | Requires flat top distributor |
| Volvo Penta | V8 5.0L OSI | 5.0L | 4-Stroke | 3888328 | Requires flat top distributor |
| Volvo Penta | V8 5.7L GXI | 5.7L | 4-Stroke | 3888328 | Requires flat top distributor |
| Volvo Penta | V8 5.7L GI | 5.7L | 4-Stroke | 3888328 | Requires flat top distributor |
| Volvo Penta | V8 5.7L OSI | 5.7L | 4-Stroke | 3888328 | Requires flat top distributor |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Marine Ignition Wire Set |
| Installation | Direct fit replacement |
| Fuel Type | Gasoline |
| Connection | Fits standard spark plug terminals and distributor cap |
| Housing Material | Silicone jacket with stainless steel conductors |
| Housing Color | Red |
| Dimensions | Various lengths: 35cm-89cm (13.8"-35") |
| Weight | 0.66 kg (1.46 lbs) |
| Fitting Type | Direct plug-in terminal connectors |
| Operating Temperature | High temperature resistant |
| Other Technical Attributes | Designed for marine engine use with high resistance to moisture, corrosion |
Package Contents
- 2 x Spark Plug Wire, 89cm/35 inch
- 2 x Spark Plug Wire, 76cm/29.9 inch
- 2 x Spark Plug Wire, 67cm/26.4 inch
- 2 x Spark Plug Wire, 53.5cm/21.1 inch
- 1 x Spark Plug Wire, 35cm/13.8 inch
Installation Guide
- Identify and disconnect the old spark plug wires from the spark plugs and distributor cap.
- Compare the lengths of the new wires to the old ones to ensure proper fitment.
- Route the new wires carefully to avoid contact with hot engine parts or moving components.
- Attach the wires to the spark plugs by pushing the terminals firmly onto the spark plug terminals.
- Connect the other ends to the corresponding terminals on the distributor cap, ensuring a secure fit.
- Check that wires are not crossed or touching each other to prevent misfiring.
- Double-check all connections for tightness and correct routing.
- Start the engine and verify smooth operation and proper ignition performance.
Troubleshooting & FAQ
- How do I confirm this fits my engine? Consult the compatible engine models table and verify your engine’s OEM part number and specifications match those listed here.
- How often should I replace spark plug wires? It is generally recommended to inspect and possibly replace spark plug wires every 2-3 years depending on usage and condition.
- Are these spark plug wires identical to OEM? This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
- What if a wire is too short or doesn’t fit? Some customer reviews note fitment issues with specific models, such as the Volvo Penta 5.0 GXI coil wire being too short. Verify your engine specs before purchasing.
- How fast do you ship and how much does it cost? We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
- What is your warranty and return policy? This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
- Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
- Fast Global Shipping: Free delivery worldwide in 5–15 days.
- Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Forged Knives at a Stamped-Knife Price
Size: 18-Piece, Style: Traditional Handle Design
Purchased as a gift for a friend suffering with an old, rusted, chipped set of cheap big-box knives.
As far as I can tell, these are one-piece forged/milled knives with a full tang... no idea how Amazon gets them so cheap. I have a set of J.A. Henckels Four-Star that were 5x the price, and these knives are almost as nice in fitment and quality. Some of the grinds at the bolster aren't quite symmetrical, but nothing that functionally affects the knife. Not show-dogs, just old reliable mutts that get you where you need to be.
Knives have a good weight and balance, not too heavy but sit well in the hand and have a nice action. The edge out of the box is only average, and the chef's knife had a decent roll to the edge out of the box. However, they sharpen easily and can take a fine edge with a little work with the steel (no word on edge longevity yet, they don't cook that often).
The shears come apart for cleaning (which is nice), although I found it a little too unstable when opening them wide, the rivet is at 90* so when taking a big bite they have a tendency to come apart rather than scissor. Changing to a design that doesn't separate until they're fully open would make them much better.
The woodblock is pine, and had a distinct pine scent out of the box (I suppose this is an area where they saved money, I would pay a premium to get a bamboo block instead). The exterior was well-finished, but the interiors of the knife slots did have some rough spots and/or splinters from the milling. Nothing that stops it from working as intended, a little back and forth solved the majority of problems.
Friend hand washed them after receiving them, but left them damp. Water spots, but no rust on any of the blades, the steel had light surface rust that came off with a scrubby sponge and soap. Overall I remain optimistic they will stand up to the abuse of a forgetful cook.
Having bought expensive German steel, and now these, I daresay I would probably be unable to tell the difference between the two in the kitchen.
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Reviewed in the United States on August 27, 2015
★★★★★ 5
This is an inexpensive quality knife set!
Size: 18-Piece, Style: Traditional Handle Design, Size: 18-Piece, Style: Traditional Handle Design
I have been a Chef for 17 yrs. and from experience know you don't get quality in an inexpensive knife set. This AmazonBasics Premium set really impressed me. The knives I use and have at home are mixed matched because I like good hefty knives. My wife always rags on me that the knives look crappy, so I got on here and started reading reviews. I was not gonna spend alot of money on a set knowing that I have good knives already. Then I saw this set, and looked at the video.
I got them in TWO days, and when I opened the package I was expecting the block to be split, chipped, or have saw marks. As you can see the one I got was flawless. I then took out the chefs knife and smiled. Easily comparable to a 8" Zwilling JA Henckels Pro Traditional Chefs Knife. It has the same quality, heft, and balance. TRUST ME I KNOW!!!! Beautiful knife. The thickness of the blade is equal to my Victorinox Fibrox Chefs Knife and I paid $45. for that knife alone!!! This here is a quality product at a good price. Treat them with respect and they will last for YEARS. If your looking for a good complete set, a nice wedding gift, of just looking to replace the "crappy" set you have look no further.
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Reviewed in the United States on May 24, 2016
★★★★★ 5
Amazing for the price
Size: 9-Piece, Style: Traditional Handle Design
At a higher price they would have been 4 or 3 stars, but for $50 this is an insane deal. The steel is pretty good quality. It almost seems like it's hardened VG-10 but I think they would advertise that if it were so I'm guessing it's a cheaper stainless steel that just comes harder without being treated though I'm just speculating based on price. Anyways they're flat ground, take an edge easily, and hold it reasonably well. Nicer knives would certainly hold an edge longer but I'm pretty happy with them. The flat ground shape of the blade is actually ever so slightly convex as well, it's not too apparent in use but you can certainly see it in the reflection. The serration on the bread knife is the inverse of what I would prefer, rounded metal with points cut into it vs points extending from the blade with the rounded parts cut out. When the rounded parts are cut out it's easy to sharpen. When the points are cut out it's almost impossible to sharpen.
The handles are the downfall of the knives. They're not smoothly finished and while they look alright they feel like a cheaply cut (although very solid) piece of plastic which is exactly what they are. A little bit better finishing on the handles would really improve the knives.
The holding block serves it's purpose well. The sharpener is ok but below average, though the rough steel rod sharpeners just aren't great to begin with. Diamond coated rods are much better, though ceramic rod sharpeners are the best.
Overall I love the knives and I'm glad I bought them. For the price they're the best deal I've ever found, no question. I love that there is no logo on them, but I just don't like to see branding in general even if it's a premium brand. If you're buying this for the bread knife or the sharpener, don't, they're not good. If you want the look and feel of a $300+ knife set, don't buy this, you'll be disappointed. If you want a good quality knife set but aren't willing to spend $300+ then absolutely buy these, they're great.
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Reviewed in the United States on March 3, 2016
★★★★★ 5
Really decent knives
Size: 9-Piece, Style: Traditional Handle Design
Nice set of inexpensive knives and comfortable to use
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Reviewed in the United States on March 23, 2026
★★★★★ 5
Great Cookware Best purchase
Color: Blue, Size: 6-Quart
I purchased mine back in 2021 and I absolutely love it, cooks the best stew ever
easy wash and cleanup. Also great for deep frying
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Reviewed in the United States on June 6, 2026
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