• Kubota D722 Ring STD 16853-21050
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Kubota D722 Ring STD 16853-21050

Kubota D722 Ring STD 16853-21050

2430

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$19.99
$19.99
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Standard bore piston ring set for 1 cylinder of the Kubota D722 and D902 diesel engines. STD bore — 67mm. Ring set only — does not include the piston, pin, or clips. Order one set per cylinder — 3 sets for a complete D722 or D902 engine rebuild.

Specs: Bore: 67mm · STD (standard bore)

OEM Part Number: 16853-21050

Ships same-day on orders placed before 3 PM PST. Free shipping. 30-day returns.

Not sure it fits? Call (818) 261-3896

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COMPATIBILITY

Fits Kubota D722 & D902 Engine — STD 67MM Bore

✓ Kubota D722 Diesel Engine (3-cylinder)
✓ Kubota D902 Diesel Engine (3-cylinder)
✓ Kubota BX1800D / BX1850D / BX1860D Tractors
✓ Kubota B7300HSD / B7400HSD Tractors
✓ Kubota K008 / K008-3 Mini Excavator
✓ Kubota G1900 / GF1800 / ZD18 / TG1860 Series
✓ STD (Standard Bore) — 67mm
✓ OEM Part Number: 16853-21050

⚠ Ring set only — piston, pin, and clips not included. Order 3 for a complete D722 / D902 rebuild.

WHAT'S INCLUDED

Complete Ring Set for 1 Cylinder

⭕
Top Compression Ring
1st ring groove — 67mm STD
⭕
2nd Compression Ring
2nd ring groove — 67mm STD
⭕
Oil Control Ring
Oil ring groove — 67mm STD
📐
STD 67mm Bore
Standard size — no boring required
🛡️
30-Day Warranty
Arko quality guarantee
🚚
Same-Day Shipping
Order before 3 PM PST

WHEN TO REPLACE

Signs Your Kubota D722 Piston Rings Are Worn

Replace your D722 / D902 piston rings if you notice:

⚠️ Blue or grey smoke from exhaust — oil burning
⚠️ Excessive oil consumption between service intervals
⚠️ Low compression on one or more cylinders
⚠️ Loss of power under operating load
⚠️ Engine rebuild or top-end overhaul in progress
⚠️ Bore measured at STD 67mm spec after inspection

CUSTOMER REVIEWS

Trusted by Tractor Owners Nationwide

★★★★★ 4.6 out of 5 stars (927 reviews)
★★★★★
Perfect Fit
VERIFIED REVIEW

"Exact replacement for my Ford 4600. Installed in 20 minutes and tractor fired right up. Quality part at a great price. Will order from Arko again."

Mike T. • Verified Buyer • March 2026
★★★★★
Fast Shipping & Great Support
VERIFIED REVIEW

"Ordered Monday morning, received Wednesday. Called with a fitment question and spoke to someone who actually knew tractors. Part works perfectly on my Kubota."

James R. • Verified Buyer • March 2026
★★★★★
Better Than OEM
VERIFIED REVIEW

"This gasket kit saved me hundreds compared to dealer pricing. Quality is excellent, everything fit perfectly. No leaks after 50+ hours of operation."

David L. • Verified Buyer • February 2026

FAQ

Common Questions

What is the difference between this ring set (SKU 2430) and the complete piston kit (SKU 2434/2430)?

SKU 2430 (16853-21050) is the ring set only — 3 rings for one cylinder at $19.99. SKU 2434/2430 (16851-21114) is the complete piston assembly: 1 piston + ring set + wrist pin + 2 clips at $49.99. If your piston is still in good condition with no scoring, cracking, or wear beyond spec, save money with this ring-only set. If the piston itself is damaged, order the complete piston kit instead.

How many ring sets do I need for a complete D722 engine rebuild?

The Kubota D722 and D902 are both 3-cylinder engines. Order 3 of this ring set for a complete rebuild — one set per cylinder. All three cylinders use the same 67mm STD specification.

How do I know if my D722 needs STD rings or oversize?

Measure the cylinder bore with a bore gauge. If the bore is at or very close to the standard 67mm spec and within Kubota's wear limit, STD rings are correct. If any cylinder has been worn or previously bored beyond the limit, that cylinder needs to be bored oversize and fitted with oversize rings and piston. Call (818) 261-3896 if you need help interpreting your measurements.

What's your return policy

We offer free returns within 30 days if the part doesn't fit or you're not satisfied. Parts must be unused and in original packaging.

Do you offer technical support?

Yes. Call (818) 261-3896 and we'll help you confirm fitment, answer installation questions, or troubleshoot issues.

How long does shipping take?

Orders ship same-day if placed before 3 PM EST. Standard delivery is 3-5 business days.

Restore Compression in Your D722 — Ships Same Day

STD piston ring set for Kubota D722 and D902 engines. 67mm bore. OEM# 16853-21050. Ring set only — per cylinder. Order 3 for a full D722 rebuild. Free shipping. 30-day returns.

ADD TO CART — $19.99
📞 Questions? (818) 261-3896