• Kubota D722 Piston Ring Set STD 67mm 16851-21114
1 1

Kubota D722 Piston Ring Set STD 67mm 16851-21114

Kubota D722 Piston Ring Set STD 67mm 16851-21114

2434/2430

  • 52,000 Happy Customers
  • Free Shipping
  • 30-Day Free Returns
$49.99
$49.99
Sale Sold out
Shipping calculated at checkout.

Complete piston and ring set for 1 cylinder of the Kubota D722 and D902 diesel engines. STD (standard) bore — 67mm. Includes 1 piston, 1 complete ring set, 1 wrist pin, and 2 retaining clips — everything needed for a single-cylinder piston assembly. The D722 is a 3-cylinder engine — order 3 sets for a complete rebuild.

Specs: Bore: 67mm STD · Includes: 1 piston + 1 ring set + 1 wrist pin + 2 clips (per cylinder)

OEM Part Numbers: 16851-21114

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

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

Join 52,000+ satisfied customers

View full details

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
✓ STD (Standard Bore) — 67mm
✓ OEM Part Number: 16851-21114

⚠ Per-cylinder set. Order 3 for a complete D722 / D902 rebuild.

WHAT'S INCLUDED

Complete Piston Assembly Kit — 1 Cylinder

🔩
1× Piston
OEM-spec STD 67mm D722 piston
⭕
1× Complete Ring Set
All compression and oil rings included
📌
1× Wrist Pin
Piston pin included
🔗
2× Retaining Clips
Pin retaining clips included
🛡️
30-Day Warranty
Arko quality guarantee
🚚
Same-Day Shipping
Order before 3 PM PST

WHEN TO REPLACE

Signs Your Kubota D722 Piston Needs Replacing

Order this piston assembly kit if your D722 / D902 shows:

⚠️ Blue or grey smoke — oil burning through worn rings
⚠️ Excessive oil consumption between service intervals
⚠️ Piston scored, cracked, or damaged on teardown
⚠️ Low compression confirmed by cylinder test
⚠️ Engine rebuild or top-end overhaul in progress
⚠️ Bore measured at STD 67mm — piston replacement warranted

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 kit (SKU 2434/2430) and the ring-only set (SKU 2430)?

This kit (2434/2430) includes the complete piston assembly per cylinder: 1 piston + 1 ring set + 1 wrist pin + 2 clips at $49.99. SKU 2430 is the ring set only — no piston — at a lower price. If your piston is undamaged and your bore is at STD, save money with the ring-only set. If the piston itself is scored or cracked, order this complete kit.

Does this 67mm piston fit both the D722 and D902 engines?

Yes. The D722 and D902 share the same 67mm bore specification and piston design. OEM# 16851-21114 is correct for both engines. Always measure your bore before ordering to confirm it's at STD and hasn't been bored oversize in a previous rebuild.

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

Both the D722 and D902 are 3-cylinder engines. Order 3 of this kit for a complete rebuild — one piston assembly per cylinder. All three cylinders use identical piston specifications.

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.

Complete Piston Assembly — Ships Same Day

Piston + ring set + pin + clips for Kubota D722 and D902 engines. STD 67mm bore. OEM# 16851-21114. Per cylinder — order 3 for full D722 rebuild. Free shipping. 30-day returns.

ADD TO CART — $49.99
📞 Questions? (818) 261-3896