✓ VERIFIED
May 11, 2025
Worked great just what I was looking for
JAMES GASKETS
SKU: 681-6107
James Gaskets Milwaukee 8 Coolant Manifold O-Ring - 25/PK — Harley-Davidson Road King, Road King Special, Electra Glide Ultra Classic (2017-2019)
$14.50
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James Gaskets Milwaukee 8 coolant manifold O-ring seal, sold in a 25-pack for service shops and multi-bike operations. Direct OEM-replacement specification for Harley Milwaukee-Eight liquid-cooled engines.
Features
- 25-pack quantity
- Direct OEM replacement
- Milwaukee-Eight (M8) coolant system
Specifications
- Brand: James Gaskets
- Manufacturer Part #: 11900090
- Quantity: 25 per pack
- Weight: 0.02 lbs
Fitment
For Harley-Davidson Milwaukee-Eight (M8) liquid-cooled engines. Intended for service shops and riders maintaining multiple bikes.
Frequently Asked Questions
Will this work on Twin Cam or Evolution engines?
No — this O-ring is specific to Milwaukee-Eight liquid-cooled engines only.
Why are these sold in 25-packs?
Pack quantity is sized for shops, fleet maintenance, and riders who service multiple M8-equipped bikes.
Is this the same as the OEM Harley part?
James Gaskets manufactures these to OEM specifications as a direct replacement.
What's the application for this O-ring?
This seal sits in the coolant manifold junction on Milwaukee-Eight engines to prevent coolant leakage.
| BRAND | James Gaskets |
| TYPE | Gaskets/Seals |
| SKU | 681-6107 |
| WEIGHT | 0.02 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.92
13 RATINGS
5★
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4★
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✓ VERIFIED
Sep 30, 2024
Great company
Awesome part for a great price
✓ VERIFIED
Dec 30, 2022
Perfect fit, functions as expected. Great quality, highly recommend, would purchase again.
✓ VERIFIED
Apr 18, 2026
Excellent
✓ VERIFIED
Feb 12, 2026
Perfect fit and resonably priced
Since this aprt cannot be ordered from Harley's website (like many of their parts) it's a convenient and perfct fit.
✓ VERIFIED
Oct 5, 2025
good quality, works perfect
as described, works perfectly this thing says 2006 to 2017. it actually works 2006 to 2025 touring bike bikes.
