GX390 top-end rebuild - cylinder head, camshaft, gasket kit, muffler gasket

Honda GX390 Engine Rebuild Kit – Top End, Bottom End or Full

Top end
Price ex VAT £154.48
Trade price Precio de oferta  £154.48 Was Precio habitual  £181.74
Price inc VAT £185.38
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GX390 top-end rebuild - cylinder head, camshaft, gasket kit, muffler gasket

Honda GX390 Engine Rebuild Kit – Top End, Bottom End or Full

Price ex VAT £154.48
Trade price Precio de oferta  £154.48 Was Precio habitual  £181.74
Price inc VAT £185.38
Trade price Log in to display
Rebuild Level
SKU: KIT-GX390-TOPEND
4 in stock

Save £27.26 15% off buying these parts separately

These parts bought one by one: £181.74

One part number, one line on the invoice, one goods-in job.

Trade customer? Approved trade pricing appears automatically across products, your cart and checkout after you log in. Shopify will email you a 6-digit code — no password needed.

Complete the job — buy it as a kit

Fitment check Honda Parts part — confirm the selected option and measurements before ordering.
Selected option: Top end.
VAT & currency Prices and tax treatment follow your market and customer account; the final total is confirmed at checkout.
Dispatch & delivery We dispatch Monday–Friday. Any longer supplier lead time is shown above; delivery options and costs are confirmed at checkout.

A Honda GX390 rental engine rebuild, at the depth the job calls for. Pick the level, one part number.

Choose your level

  • Top end — cylinder head, camshaft and both gasket sets. For an engine losing compression at the top.
  • Bottom end — crankshaft, piston and rings, and the steel head gasket. For a tired or damaged bottom end.
  • Full engine — all seven parts. If the engine is out and stripped, this is everything that goes back in.

What's in each level

Top end: Cylinder Head Assembly KPHCYH390 · Camshaft Assembly KPHCA390 · Gasket Kit KPHGK390 · Muffler Gasket KPHEMG270

Bottom end: Keyed Crankshaft S Type KPHCS390S · Piston & Ring Set KPHPPRS390 · Cylinder Head Gasket, steel KPHCYHG390S

Full engine: all seven of the above. The steel head gasket supersedes the paper one in the gasket kit — fit the steel one and keep the paper as a spare.

What you save

Every level is priced 15% below the same parts bought one by one. The exact saving for the option you have selected is shown next to the price.

How to save more

  • Go deeper while it is apart. The strip-down costs the same whether you replace three parts or seven. A full engine kit now is cheaper than a second teardown in six weeks.
  • One part number. One line on the invoice, one goods-in job, and nothing missing when the engine is already on the bench.

Fits Honda GX390.

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