Overhaul Kits
10,000+ SKUs across 8 categories. CAT · Komatsu · Hitachi · Volvo · Hyundai and more. MOQ 1 piece.
Overhaul Kits
6 items
Cylinder Components
Cummins B3.3 QSB3.3 overhaul rebuild kit with genuine gaskets & liners
<p>Get your Cummins B3.3 or QSB3.3 back online faster — with zero guesswork on part compatibility or quality. This <strong>Cummins B3.3 rebuild kit</strong> delivers OEM-level reliability at a fraction of the cost, eliminating downtime caused by mismatched gaskets or undersized liners.</p> <ul> <li>Includes semi-finished cylinder liners — critical for proper press-fit and bore alignment during honing (a must for maintaining correct piston-to-wall clearance)</li> <li>Full set: genuine-spec gaskets, main & con rod bearings, valves, guides, seats, pistons, pins, rings, and thrust washers — all pre-matched for B3.3/QSB3.3</li> <li>No more juggling multiple suppliers: one kit covers every major wear component in the short block and valvetrain</li> <li>Verified fit for both mechanical B3.3 and electronic QSB3.3 engines — no cross-reference headaches</li> </ul>
Cylinder Components
Kubota V2203 Engine Overhaul Kit with Semi-Finished Liners
<p>Get your Kubota V2203-powered excavator or skid steer back online faster—without OEM delays or markup. This <strong>Kubota V2203 overhaul kit</strong> delivers full-cylinder restoration with semi-finished liners that allow precise honing to match your block’s bore condition, a critical step many generic kits skip.</p> <ul> <li>Includes 4 semi-finished cylinder liners (not pre-honed)—so you retain original deck height and achieve optimal piston-to-wall clearance after final machining</li> <li>Covers high-demand models: Bobcat 763/S175, Kubota KX121-2/KX161-2, and L-series tractors—no cross-referencing guesswork</li> <li>All gaskets, bearings, valves, seats, guides, pistons, pins, and rings in one verified set—eliminates sourcing mismatches and downtime from missing components</li> <li>Pre-tested to OEM-spec tolerances; backed by XUNPO’s 6-month warranty and technical support from engineers who’ve rebuilt these engines hundreds of times</li> </ul>
Cylinder Components
Kubota V3307 V3307T Engine Rebuild Kit with Genuine Gaskets & Pistons
<p>Get your Kubota V3307 back online faster—without OEM delays or inflated pricing. This <strong>Kubota V3307 rebuild kit</strong> delivers full-cylinder restoration with genuine-spec gaskets, forged pistons, and precision-matched cylinder liners that are semi-finished for proper honing to your block’s bore condition—a critical detail most generic kits skip.</p> <ul> <li>Includes all core internals: main/rod bearings, valve seats & guides, piston pins, snap rings, and standard rings—no hunting for missing pieces</li> <li>Pre-verified fit for V3307, V3307T, and V3307-DI engines—no cross-referencing guesswork</li> <li>Built to match OEM torque specs and clearances, so your rebuild holds up under continuous duty</li> <li>Ships from Guangzhou warehouse in 2–5 working days—even for single-piece orders</li> </ul>
Cylinder Components
Kohler CH18–CH641 Engine Overhaul Kit with Piston Rings & Gaskets
<p>Get your Kohler-powered equipment back online fast—no more downtime waiting for OEM parts or risking counterfeit gaskets that blow out after 50 hours. This <strong>Kohler engine overhaul kit</strong> delivers OEM-spec piston rings, multi-layer steel (MLS) head gaskets, and Viton® crankshaft seals—all pre-sorted and matched to exact CH18–CH641 service tolerances.</p> <ul> <li>Includes the critical <strong>24-108-22-S replacement kit</strong>—the only version with torque-to-yield cylinder head bolts calibrated for Kohler’s CH-series combustion chamber pressures</li> <li>Fits 14+ model variants across CH, CV, and CH6xx series—including split-range designations like CH18-22 and CH620-641—so you stop juggling multiple kits</li> <li>All rings are plasma-moly coated and pre-gapped to 0.003–0.005" for optimal break-in on air-cooled V-twins</li> <li>Ships from our Guangzhou warehouse in 2–5 working days—even for single-piece orders—so urgent field repairs never stall</li> </ul>
Cylinder Components
V3307 Engine Overhaul Kit with Crankshaft & 4 Rods for Kubota KX080-3/4
<p>Get your Kubota KX080-3/4 or Bobcat S650 back online fast with full OEM-equivalent reliability — no more downtime waiting for slow OEM lead times or risking counterfeit rebuild kits. The <strong>V3307 engine overhaul kit</strong> includes a fully heat-treated alloy crankshaft and four precision-balanced connecting rods, ensuring proper journal alignment and eliminating premature bearing wear — a critical detail many suppliers overlook.</p> <ul> <li>Fits V3307, V3307T, V3307-DI, and Tier 4-compliant variants (V3307-CR-TE4-SL2-Q)</li> <li>Complete standard-spec rebuild: liners, pistons, rings, valves, bearings, gaskets & bushings — all pre-matched</li> <li>Ready to ship from Guangzhou warehouse — 1-piece MOQ, 2–5 working day dispatch on in-stock orders</li> <li>Backed by 12-month warranty and technical verification support before you order</li> </ul>
Cylinder Components
Kubota D902 Engine Rebuild Kit with New Crankshaft & 3 Rods
<p>Get your Kubota D902 back to OEM-level reliability—fast—without paying OEM prices or waiting weeks for parts. This <strong>Kubota D902 rebuild kit</strong> includes a brand-new crankshaft and three new connecting rods, eliminating the #1 cause of premature failure in high-hour D902 engines: worn rod journals and stretched big-end clearances.</p> <ul> <li>Full standard-overhaul gasket set + pistons, rings, pins, bearings, valves, and seats—everything needed for a complete, drop-in rebuild</li> <li>Fits BX2360, RTV900, KX018-4, B6200, KH-35, and 40+ other Kubota models—including emission-controlled GL-6500S-RV and RTV-X900 series</li> <li>All rotating assembly components are new (not reconditioned), with crankshaft ground to original D902 journal specs—critical for proper oil film formation and bearing life</li> <li>Ships same day from Guangzhou warehouse—no delays, no counterfeit risk, and full technical support before or after installation</li> </ul>