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Description
CTO-3687X BRAKE DRUM (FRONT, 16.50" X 6")Technical Specifications Part Type Heavy Duty Brake Drum (Servicio Severo) Industry Number 3687X (Webb 66884) Brake Size 16. 5" x 7" (Same dimensions as standard) Mounting Type Hub Pilot (Unimount) Outboard Weight ~120 lbs (54 kg) Massive Heat Sink Bolt Pattern 10 Holes on 11. 25" Circle Pilot Hole 8. 78" Comparison: Standard vs. Heavy Duty Feature 3600AX (Standard) 3687X (Heavy Duty) Weight ~100 105 lbs ~120 125 lbs (+20 lbs iron) Wall Thickness
Technical Specifications
| Part Type | Heavy Duty Brake Drum (Servicio Severo) |
| Industry Number | 3687X (Webb 66884) |
| Brake Size | 16.5" x 7" (Same dimensions as standard) |
| Mounting Type | Hub Pilot (Unimount) / Outboard |
| Weight | ~120 lbs (54 kg) - Massive Heat Sink |
| Bolt Pattern | 10 Holes on 11.25" Circle |
| Pilot Hole | 8.78" |
Comparison: Standard vs. Heavy Duty
| Feature | 3600AX (Standard) | 3687X (Heavy Duty) |
|---|---|---|
| Weight | ~100-105 lbs | ~120-125 lbs (+20 lbs iron) |
| Wall Thickness | Standard | Thicker (Resists warping) |
| Best Application | Highway / OTR Trailers | Refuse, Dump, Cement, City Bus |
Cross References
| Brand | Part Number |
|---|---|
| CTO | CTO-3687X |
| Automann | 145.3687X |
| ConMet | 10037300 |
| Durabrake | 3687X |
| Gunite (Accuride) | 3687X |
| KIC | 60001-020 |
| Meritor | 85-123385 |
| Webb Wheel | 66884, 66884B |
???? RECOMMENDATION: Use this drum for vehicles with frequent stops or heavy loads (Garbage trucks, Mixers). The extra iron absorbs heat to prevent the drum from becoming "oval" (deformed) and reduces brake fade.
Compatible Shoes: Fits standard 16.5" x 7" shoes (4707, 4709, 4515). No special shoes required.
Compatible Shoes: Fits standard 16.5" x 7" shoes (4707, 4709, 4515). No special shoes required.
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
4.7 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Great sunscreen
Love this sunscreen… smells great and not sticky at all!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
★★★★★ 4
Good quality skin care
Great sunscreen for sensitive skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
★★★★★ 5
Sun-kissed skin
This was the best kit to take to the islands. Loved the fragrance and didn’t burn. (Just follow the directions!)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026
★★★★★ 5
Great for sensitive skin
Scent: Fragrance Free, Size: 1.7 Fl Oz (Pack of 1)
I usually have problems with fragrance in almost any face cream or sunscreen, and my skin reacts very easily, so I’m always careful with what I use. I tried the COOLA Organic Face Sunscreen SPF 50 Sunblock Lotion (Fragrance Free) and I’m honestly impressed. It feels very light on the skin, doesn’t irritate my face at all, and finally a sunscreen that doesn’t have that strong smell that usually bothers me. It absorbs well, works great under makeup, and gives good daily protection without feeling greasy. If you have sensitive skin or issues with fragrance like I do, this one is definitely worth trying.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
★★★★★ 5
Love this sunscreen
Scent: Fragrance Free, Size: 1.7 Fl Oz (Pack of 1)
I would love to buy again, but I go through sunscreen, I have to find a little less expensive one. No burn, dewy not greasy look. Great for mature skin. No fragrance, works well, melts right in the skin. I do love this product and the spray too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
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