Singer Model 66 Sewing Machine Parts

The Singer Model 66 is one of the most beloved machines in sewing history, built to last with heavy-duty components and a timeless design. Whether you’re working with a classic treadle, a hand crank, or an electric conversion, it’s the kind of machine that outlives generations—if you give it the parts it deserves. This collection is curated specifically for the Singler Model 66 sewing machine parts, with original and verified-compatible parts selected to keep your machine sewing as smoothly as it did decades ago.

If you're working on other Singer classics too, don't miss our full lineup of vintage Singer sewing machine parts, our collection of Singer Model 401A sewing machine parts, the hard-to-find Singer Model 29K sewing machine parts, or original Singer sewing machine gears. And if you’re restoring the cabinet that holds your 66, explore our treadle cabinet parts collection for genuine hinges, belts, and brackets.

Why the Singer 66 Needs Model-Specific Parts

The Singer 66 isn’t just a beautiful machine—it’s mechanically distinct. It uses a unique class 66 drop-in bobbin system, specific tension assemblies, and often has model-specific presser feet, bobbin winders, and stitch plates that don’t cross over cleanly from other Singer models.

Trying to rig a part from a 15 or 201 series might seem like it works, but it can throw off stitch consistency or even damage your machine long-term. Every part in this collection has either been pulled from a functioning Singer 66 or verified against original specs for true compatibility.

What You’ll Find in This Collection

Inventory changes based on what we’re able to salvage, but most listings are low-stock or one-of-a-kind. Here are the parts we most often carry for the Singer Model 66:

• Bobbin cases and bobbin winders specific to the 66 class system
• Original presser feet and compatible replacements
• Needle plates, feed dogs, and slide plates
• Tension assemblies and thread take-up springs
• Gears and internal linkage parts
• Motor brackets, handwheels, and belt pulleys
• Full donor machines for parts harvest
• Original screws, thumb nuts, and mounting hardware

Every listing includes high-resolution photos, condition notes, measurements, and compatibility details. If you’re unsure about a fit, contact us before ordering—we’ll confirm it for you.

Common Repairs for the Model 66

These machines were built like tanks, but after decades of use (and storage), there are a few parts that commonly need replacement:

• Tension assemblies that have lost spring action or precision
• Bobbin winders that no longer grip or spin properly
• Stitch plates with damage from bent or broken needles
• Feed dogs worn down from decades of use
• Presser feet missing or replaced with incorrect types
• Handwheels with cracked hubs or stripped screws

Replacing these components with correct, well-matched parts brings your machine back to factory-like operation.

Quality Checked, Ready to Sew

We don’t just list anything that looks close. Every part in this collection has been inspected, cleaned, and verified for usability. If it’s a reproduction or compatible substitute, it’s been tested against a working Model 66 in-house.

Unlike bulk parts sellers, we only post items that meet our standards. If a part has wear, cosmetic marks, or specific quirks, that information is clearly included in the description so you know exactly what you’re buying.

Compatible Machines and Variants

The Model 66 was made in treadle, electric, and hand crank variations, and there are slight differences between them—especially between early red-eye decals, later 66-16 models, and 66-18 variants. We’ll note these distinctions wherever relevant in each listing. If you're not sure which variation you have, send us a photo and we’ll help sort it out.

Also worth noting—many of the attachments and accessories for the Model 66 are many times also compatible with the Singer 201, and Singer Featherweight models, but always check listing notes to be sure.

Frequently Asked Questions

Do these parts fit all versions of the Singer Model 66?
Most do, but there are subtle differences between early and late models. Check each listing for version-specific notes or contact us if you’re not sure.

Do you carry parts for treadle and electric Model 66 machines?
Yes. We regularly stock motor brackets, handwheels, treadle belt pulleys, and more for both electric and treadle versions.

What’s the difference between the Model 66 and 66-16 or 66-18?
These are sub-models of the 66 with small mechanical updates or cosmetic changes. Most core parts are compatible, but we’ll note exceptions when they apply.

What if I don’t see the part I need listed?
Reach out. Our inventory changes constantly, and we have unlisted parts in storage. There's a good chance we have what you need even if it's not posted yet.

Are these parts original or aftermarket?
Both. We clearly label every item as either original vintage or compatible replacement. All have been vetted for fit, function, and quality.

Can I restore an entire Singer 66 using your parts?
Yes—many of our customers have done exactly that. We often list full donor machines or bundles of hard-to-find parts. Contact us if you’re trying to build or rebuild from the ground up.

Give Your Singer 66 the Parts It Deserves – While They’re Still Available

Machines like the Singer 66 were built to outlast trends and technology. But even the best-made tools need the right parts to stay functional. Whether you’re repairing a family heirloom, fixing up a thrift store find, or sourcing a replacement part for your daily-use treadle, you’ll find what you need here.

Browse the Singer Model 66 parts collection today to see what’s in stock. Most items are limited or one-of-a-kind, and restocks can take time. Still hunting for a specific screw, tension unit, or bobbin case? Contact us—we respond quickly and may already have it in our unlisted inventory.