8-94391-602-0 Cylinder Liner for Isuzu 4HK1 6HK1 Engine

8-94391-602-0 Cylinder Liner for Isuzu 4HK1 and 6HK1 Engine Repair

The 8-94391-602-0 cylinder liner is supplied for Isuzu 4HK1, 6HK1 and 6HK1T diesel engine repair, excavator overhaul, truck engine rebuild and construction machinery maintenance. It is used to restore the cylinder bore working surface, support piston movement and help recover stable compression after liner wear, scoring, overheating or long-term engine operation.

This page is focused on 8-94391-602-0 as the main part number. The no-hyphen format 8943916020 and the writing format 8-94391602-0 are common checking references, but the main signal of this page should remain 8-94391-602-0. Final fitment should be confirmed by the engine model, removed liner, engine nameplate and sample photos before ordering.

Product Information and Engine Set Quantity

This cylinder liner is usually requested as an engine set rather than a single loose piece. For an Isuzu 4HK1 engine, one engine set normally needs 4 pieces. For an Isuzu 6HK1 or 6HK1T engine, one engine set normally needs 6 pieces. Please confirm your engine model before quotation so the correct set quantity can be prepared.

Common checking data for this liner includes 115 mm bore, 118 mm outer diameter and 210 mm length reference. These dimensions are useful for pre-order checking, especially when the old engine has been rebuilt before or when the machine model is not enough for final confirmation.

Some market references also connect this liner direction with 4HK1, 6HK1 and 6HH1 applications. Because different engine versions and regional configurations may exist, Topvelsun recommends comparing the removed liner and engine nameplate before shipment.

Application Notes for Isuzu 4HK1 6HK1 6HK1T Cylinder Liner

The Isuzu 4HK1 and 6HK1 engine families are used in different truck, excavator, construction machinery and industrial diesel engine applications. Buyers may search this part from Isuzu truck repair, Hitachi excavator repair, JCB equipment maintenance, Case machinery service or general diesel engine overhaul demand.

For SEO and buyer clarity, this page should focus on 8-94391-602-0, 8943916020, Isuzu 4HK1, Isuzu 6HK1 and Isuzu 6HK1T. It should not be mixed with unrelated Isuzu liner numbers for 4JB1, 6BD1T, 6BG1T, 6SD1T or 6WG1 unless they are shown only as related products outside the main product description.

If a buyer only provides the machine model, ask for the engine nameplate and old liner photos before quotation. The same machine series may use different engines depending on region, year, emission version and repair history.

How to Confirm the Correct 8-94391-602-0 Liner

Before ordering, confirm the removed liner and engine information. This is important for remote buyers, repair shops and distributors who need to avoid wrong engine set quantity, return cost or rebuild delay.

• Confirm whether the engine model is Isuzu 4HK1, 6HK1 or 6HK1T.

• Check whether the old liner number matches 8-94391-602-0, 8943916020 or 8-94391602-0.

• Confirm whether the order should be 4 pieces for 4HK1 or 6 pieces for 6HK1.

• Measure the bore size, outer diameter and total length of the removed liner.

• Compare the collar diameter, collar thickness, lower edge design and liner finish type.

• Send engine nameplate, old liner photos and measurement photos before quotation if you are not sure.

Common Replacement Reasons

A 4HK1 or 6HK1 cylinder liner may need replacement when the engine has low compression, hard starting, high oil consumption, blue smoke, white smoke, coolant leakage, piston scuffing, abnormal bore wear, overheating damage or reduced engine power.

During engine overhaul, the liner should be inspected together with the piston, piston ring, cylinder block, cylinder head gasket, injector condition, connecting rod bearing, cooling system, lubrication system and air intake filtration.

If the original failure was caused by overheating, dirty intake air, poor lubrication, coolant corrosion or incorrect machining, replacing only the cylinder liner may not solve the complete engine problem.

Buying Notes for Repair Shops and Parts Distributors

For repair shops, this 8-94391-602-0 liner is suitable for Isuzu 4HK1, 6HK1 and 6HK1T engine rebuild work where the original sleeve is worn, scratched, corroded or unable to maintain stable compression. For distributors, it can be supplied for Isuzu diesel engine service demand, customer replacement orders and repair stock.

Topvelsun supports engine set orders according to engine cylinder quantity. If the buyer is repairing a 4HK1 engine, confirm whether 4 pieces are required. If the buyer is repairing a 6HK1 or 6HK1T engine, confirm whether 6 pieces are required. This helps avoid under-ordering and keeps the order suitable for a complete engine rebuild.

For bulk orders, please confirm quantity, packing requirement, finish type and whether you need liner only or a larger engine rebuild parts combination. Clear confirmation before shipment helps reduce wrong-part risk and improves distributor order efficiency.

Installation and Maintenance Notes

Before installation, clean the cylinder block bore and check for rust, burrs, cracks, old machining marks or block distortion. The liner seat should be clean and stable so the sleeve can sit correctly.

If the liner is semi-finished, final boring and honing should follow the engine rebuild requirements. Check bore size, roundness, taper, surface finish and piston-to-liner clearance before final assembly.

After assembly, monitor oil consumption, exhaust smoke, coolant condition, crankcase pressure, starting performance and operating temperature during the first working period.

Good lubrication, clean intake air and stable cooling performance are important for liner service life. If the engine previously failed from overheating, dust intake or oil contamination, those causes should be corrected during rebuild.

Why Source 8-94391-602-0 Cylinder Liner from Topvelsun

Topvelsun supplies aftermarket diesel engine parts for excavator repair, truck engine rebuild, construction machinery maintenance, workshop service and overseas parts distribution. For 8-94391-602-0 cylinder liner orders, we help buyers compare part number, engine model, old liner photos and set quantity before shipment.

This product is suitable for repair workshops, engine rebuilders, parts distributors, fleet maintenance buyers and equipment owners who need practical replacement support. Please send your engine model, required set quantity, old sample photos and engine information for quotation.

FAQ

What is the main product on this page?

This page is for the 8-94391-602-0 cylinder liner used for Isuzu 4HK1, 6HK1 and 6HK1T diesel engine repair and overhaul.

Is 8943916020 the same search reference as 8-94391-602-0?

8943916020 is commonly used as a no-hyphen reference for 8-94391-602-0. The main part number of this page should remain 8-94391-602-0, and the removed liner should still be checked before ordering.

How many pieces are in one engine set?

For an Isuzu 4HK1 engine, one engine set normally needs 4 cylinder liners. For an Isuzu 6HK1 or 6HK1T engine, one engine set normally needs 6 cylinder liners. Please confirm the engine model before quotation.

Can this liner be used for excavator engine repair?

It may be requested for excavator and construction machinery repair when the machine uses an Isuzu 4HK1, 6HK1 or 6HK1T engine. Please confirm by engine model, removed liner and machine information before ordering.

What dimensions should be checked before ordering?

Common reference dimensions include 115 mm bore, 118 mm outer diameter and 210 mm length. Please compare these dimensions with the removed liner and confirm collar design, finish type and engine information.

What information should I send before ordering?

Please send the engine model, machine model, old liner photos, part number if available, bore size, outer diameter, total length and required set quantity. This helps reduce wrong-part risk before shipment.