Honda GX160 Engine

• 17210-ZE1-517 — VIN prefix GCAAH

  Dual-element system: this primary element pairs with a separate outer filter, Honda 17218-ZE1-507 (superseded to 17218-ZE1-821), on the same diagram - not captured as its own row this batch. Do not confuse with the semi-dry single-element system used on the GCACK prefix (see that row below) - same GX160 name, structurally different air-cleaner design.

  Source: Honda GX160 H1 QX2 (GCAAH) - Honda Engine, Made in China (SN: GCAAH-1000001 - GCAAH-9999999) AIR CLEANER (DUAL) Parts Lookup and Diagrams | PartsTree — AIR CLEANER (DUAL) parts diagram: "ELEMENT, AIR CLEANER (DUAL)" tied to part number "17210-ZE1-517" (superseded to Honda 17210-Z4M-821 per the same page); verified directly in raw page HTML/JSON via curl.
• 17210-ZE1-822 — VIN prefix GCABT

  Different original part number than the GCAAH dual element (17210-ZE1-517), though both are shown as currently superseded to the same replacement, 17210-Z4M-821. Companion outer filter on this diagram is 17218-ZE1-507 (same as GCAAH), superseded to 17218-ZE1-821 - not captured as its own row this batch.

  Source: Honda GX160 T1 QX2 (GCABT) - Honda Engine, Made in Thailand (SN: GCABT-1000001 - GCABT-9999999) AIR CLEANER (1) Parts Lookup and Diagrams | PartsTree — AIR CLEANER (1) parts diagram: "ELEMENT, AIR CLEANER (DUAL)" tied to part number "17210-ZE1-822"; page also shows Honda 17210-Z4M-821 as the current superseding part; verified in raw page HTML/JSON via curl.
• 17211-ZE1-000 — VIN prefix GCACK

  GCACK U1 WKT6 uses a semi-dry, single-element air cleaner (paired with a separate grid, 17212-ZE1-000, and cover, 17231-ZE1-000, not captured as their own rows) - a structurally different system from the dual-element foam+paper setup used on GCAAH/GCABT. Do NOT cross-apply air-filter numbers between these type codes even though they share the GX160 name.

  Source: Honda GX160 U1 WKT6 (GCACK) - Honda Engine, Made in Japan (SN: GCACK-1000001 - GCACK-9999999) AIR CLEANER (2) Parts Lookup and Diagrams | PartsTree — AIR CLEANER (2) parts diagram, ref #1: "ELEMENT, AIR CLEANER (SEMI-DRY)" tied to part number "17211-ZE1-000"; verified in raw page HTML/JSON via curl.

This model was built with more than one part here — check your serial number or engine TYPE against the options below before ordering.

• 16100-Z1T-W51 — VIN prefix GCAAH

  Paired with the earlier carburetor below (16100-ZH8-W51, use up to SN 1417731). Verify the engine's own serial number against the 1417731/1417732 cutoff before ordering.

  Source: Honda GX160 H1 QX2 (GCAAH) - Honda Engine, Made in China (SN: GCAAH-1000001 - GCAAH-9999999) CARBURETOR Parts Lookup and Diagrams | PartsTree — CARBURETOR parts diagram: "CARBURETOR ASSY. (BE65T A)" tied to part number "16100-Z1T-W51", qualifier "Use from Engine SN 1417732." shown directly beneath it; verified in raw page HTML/JSON via curl.
• 16100-ZH8-W51 — VIN prefix GCAAH

  Superseded by 16100-Z1T-W51 for engines with SN 1417732 and higher (paired row above). Included separately because the source itself splits this part by serial, not because it applies to the whole GCAAH range.

  Source: Honda GX160 H1 QX2 (GCAAH) - Honda Engine, Made in China (SN: GCAAH-1000001 - GCAAH-9999999) CARBURETOR Parts Lookup and Diagrams | PartsTree — CARBURETOR parts diagram: "CARBURETOR ASSY. (BE65B B/C)" tied to part number "16100-ZH8-W51", qualifier "Use up to Engine SN 1417731." shown directly beneath it; verified in raw page HTML/JSON via curl.
• 16100-Z0T-911 — VIN prefix GCABT

  Different from GCAAH's BE65T A/BE65B B/C and GCACK's BE65C B - carburetor is prefix-specific for GX160.

  Source: Honda GX160 T1 QX2 (GCABT) - Honda Engine, Made in Thailand (SN: GCABT-1000001 - GCABT-9999999) CARBURETOR (2) Parts Lookup and Diagrams | PartsTree — CARBURETOR (2) parts diagram, ref #10: "CARBURETOR ASSY. (BE65Q A)" tied to part number "16100-Z0T-911"; verified directly in the page's embedded parts-table JSON (schema.org ProductModel confirms the exact model/VIN in the page).
• 16100-ZH8-W61 — VIN prefix GCACK

  Different carburetor spec (BE65C B) than GCAAH (BE65T A / BE65B B/C) or GCABT (BE65Q A) - carburetor is prefix-and-type-specific on GX160.

  Source: Honda GX160 U1 WKT6 (GCACK) - Honda Engine, Made in Japan (SN: GCACK-1000001 - GCACK-9999999) CARBURETOR (3) Parts Lookup and Diagrams | PartsTree — CARBURETOR (3) parts diagram, ref #10: "CARBURETOR ASSY. (BE65C B)" tied to part number "16100-ZH8-W61"; verified in raw page HTML/JSON via curl.

This model was built with more than one part here — check your serial number or engine TYPE against the options below before ordering.

• 30500-Z1T-023 — VIN prefix GCAAH

  Specific to the GCAAH prefix - differs from the coils found on GCABT (30500-Z0T-802) and GCACK (30500-ZE1-073) checked in this same batch. Ignition coil is NOT a universal GX160 part; always confirm the VIN prefix.

  Source: Honda GX160 H1 QX2 (GCAAH) - Honda Engine, Made in China (SN: GCAAH-1000001 - GCAAH-9999999) FLYWHEEL & IGNITION COIL Parts Lookup and Diagrams | PartsTree — FLYWHEEL & IGNITION COIL parts diagram: "COIL ASSY., IGNITION" tied to part number "30500-Z1T-023"; verified directly in raw page HTML via curl.
• 30500-Z0T-802 — VIN prefix GCABT

  Different original coil part number than GCAAH (30500-Z1T-023) and GCACK (30500-ZE1-073) - ignition coil is prefix-specific for GX160, the same pattern already documented for GX200. Page shows Honda 30500-Z0T-003 as the current superseding part.

  Source: Honda GX160 T1 QX2 (GCABT) - Honda Engine, Made in Thailand (SN: GCABT-1000001 - GCABT-9999999) IGNITION COIL Parts Lookup and Diagrams | PartsTree — IGNITION COIL parts diagram, ref #1: "COIL ASSY., IGNITION (TEC)" tied to part number "30500-Z0T-802"; verified in raw page HTML/JSON via curl.
• 30500-ZE1-073 — VIN prefix GCACK

  Different coil part number than GCAAH (30500-Z1T-023) and GCABT (30500-Z0T-802) - confirms ignition coil varies by prefix on GX160, as it does on GX200.

  Source: Honda GX160 U1 WKT6 (GCACK) - Honda Engine, Made in Japan (SN: GCACK-1000001 - GCACK-9999999) IGNITION COIL Parts Lookup and Diagrams | PartsTree — IGNITION COIL parts diagram, ref #1: "COIL ASSY., IGNITION Use up to Engine SN 1530314." tied to part number "30500-ZE1-073"; verified in raw page HTML/JSON via curl.

This model was built with more than one part here — check your serial number or engine TYPE against the options below before ordering.

• 98079-56846 — VIN prefix GCAAH, VIN prefix GCABT, VIN prefix GCACK

  GCAAH is a China-built export/OEM-supply engine that does not appear on Honda's own North-America dealer serial-number lookup (peparts.honda.com); corroborated instead by two independent authorized-dealer parts-diagram sites (PartsTree and Jack's Small Engines) both agreeing on "GX160H1 QX2 ENGINE, CHN, VIN# GCAAH-1000001 TO GCAAH-9999999". Same ref group also lists Denso W20EPR-U as an equivalent, and NGK BPR5ES / Denso W16EPR-U as an Optional colder-heat-range alternate (not shipped as a separate row).

  Identical NGK BPR6ES part number as the GCAAH and GCACK spark plugs checked in this same batch - spark plug is consistent across all three GX160 prefixes checked, matching the pattern already confirmed for GX200's nine prefixes.

  Same ref-group also lists Denso W20EPR-U as an equivalent standard plug, and NGK BPR5ES / Denso W16EPR-U as an Optional colder-range alternate (not shipped as a separate row) - identical pattern to the GCAAH spark-plug group.

  Source: Honda GX160 H1 QX2 (GCAAH) - Honda Engine, Made in China (SN: GCAAH-1000001 - GCAAH-9999999) CYLINDER HEAD Parts Lookup and Diagrams | PartsTree — CYLINDER HEAD parts diagram, ref #15: "SPARK PLUG (BPR6ES) (NGK)" tied to part number "98079-56846"; verified directly in the raw page HTML/JSON via curl, not just a page summary.

Changed partway through production: Applies across the full GCAAH-1000001-GCAAH-9999999 range for the H1 QX2 type. Identical NGK BPR6ES number confirmed on GCABT and GCACK prefixes too - the spark plug does not vary by prefix on GX160, matching the pattern already found on GX200.