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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
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Description
Ultra Series Piston Set By JE - 84.5mm .50mm Oversize Bore | 9.5:1 CR | Stock Stroke 89.6mm - BMW N55/S55NOTE: Image shown not actual parts. JEs Ultra Series pistons for sport compact and euro applications combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. Premium, gas nitrided carbon steel rings are included Bore (in) 3. 327 Bore (mm) 84. 5 Top Compression Ring Thickness 0. 0400 Second
NOTE: Image shown not actual parts.JE’s Ultra Series pistons for sport compact and euro applications combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick-wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. Premium, gas-nitrided carbon steel rings are included
Bore (in) 3.327
Bore (mm) 84.5
Top Compression Ring Thickness 0.0400
Second Compression Ring Thickness 0.0480
Oil Ring Thickness 0.111
Forging Type FSR
Volume (cc) -14.70
Series JE Ultra Series
Piston Head Type Inv Dome/Dish
Pin Diameter (IN) 0.866
Compression Height 1.275
Make BMW
Wrist Pin Style - floating or press fit Floating
Wall Type CHAMFERED
Wall Thickness (IN) 0.230
Ringset Part Number JG1001-3327
Ring Brand ProSeal
Ringset Included Yes
Retainer Thickness 0.063
Retainer Lock Style Wire Lock
Retainer Lock Part Number 866-063-MW
Retainer Diameter (IN) 0.866
Replacement Single Piston 367880S
Piston Pin Inside Diameter 0.406
Piston Pin Material 9310 NICKEL CARBON STEEL ALLOY
Piston Material 2618
Piston Pin Length (IN) 2.250
Pin Offset Yes
Pin Brand JE Pistons
Pin Part Number 866-2250-23-93C
Pin Included Yes
Pin Diameter (mm) 22.00
Oil Rail Support Included No
Deck Clearance 0.000
Brand JE Pistons
OE Part #'s:
11-25-8-619-196 / 11 25 8 619 196 / 11258619196
11-25-7-645-958 / 11 25 7 645 958 / 11257645958
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
4.3 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Just like the oem parts.
Like oem so all good.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2025
★★★★★ 5
Works well!
If you have Omni S1 pro this is everything you could ever need to maintenance for it! I have it run twice every night and you can’t beat $60 to have several repairs several times! Totally worth its money and fits exactly as if bought new!
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Reviewed in the United States on December 17, 2025
★★★★★ 5
Came as described
My order came exactly as described and in a very timely fashion. Very pleased with this purchase.
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Reviewed in the United States on December 7, 2025
★★★★★ 4
Genuine parts that keep my S1 Pro running like new
Fit & Quality:
Everything fit perfectly on my Eufy Omni S1 Pro — the rollers snapped right in, and the filters matched the originals exactly. You can tell these are genuine Eufy parts, not knockoffs.
Performance:
After swapping the brushes and mop roller, my vacuum immediately started cleaning better again. Suction improved, and it picked up fine dust I hadn’t noticed before.
Ease of Use:
Installation took less than ten minutes. Everything comes sealed and labeled clearly, which makes it simple to replace parts without guessing.
Value:
It’s a little pricey compared to third-party kits, but the quality and compatibility are worth the extra few bucks.
Verdict:
Solid replacement set that restores performance to like-new.
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Reviewed in the United States on November 2, 2025
★★★★★ 5
Great aftermarket substitute items
Great quality and fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2024
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