Isuzu Vehicle Bulb Guide

Match the vehicle’s original market, production period, literal chassis and actual factory lamp assembly before choosing replacement bulbs. RHD, registration year or a shared model design alone does not establish Barbados fitment or Riglow LED conversion compatibility.

POLARG Reference: Source-Scoped Isuzu Findings

Original headlamp and front-fog findings checked directly against 24 NISSEI/POLARG records across 14 applications on 22 October 2026. These older Japanese-market source scopes do not cover every Isuzu generation or overseas specification. Do not extend them to D-Max, MU-X or related Honda, Nissan, Subaru or Opel vehicles.

Aska, March 1994–September 1997, literal CJ系

POLARG lists H4 in the low row (12V60/55W / 0-02) and a separate H1 high (12V55W / 0-08); H3 fog (12V55W / 0-13). Preserve both H4 and the separately listed H1 high rather than silently deleting one.

Review the CJ Aska source record

Aska, October 1997–December 2001, literal CJ2･3

H1 halogen low (12V55W / 0-08) or D2R HID low (85V35W / 3503K); H1 high and fog (each 12V55W / 0-08). Identify the actual halogen/HID assembly.

Review the later Aska source record

Aska CX, May 1990–February 1994, literal BC系

H4 low-row entry (12V60/55W / 0-02); separate high blank; H3 fog (12V55W / 0-13).

Review the Aska CX source record

Gemini, August 1993–January 1997, literal MJ1･2

702K low-row entry (12V65/55W / 0-09); separate high and fog blank. Preserve 702K as its own printed type, not silently substituted with H4.

Review the earlier Gemini source record

Gemini, literal February 1997–February 1997, MJ4･5･6

H4 low-row entry (12V60/55W / 0-02); separate high and fog blank. Preserve the source’s single-month period as an unresolved date qualification; do not silently extend it using the roof-specification record.

Review the single-month Gemini source record

Gemini roof specification, February 1997–September 2000, literal MJ4･5･6

H4 low-row entry (12V60/55W / 0-02); separate high and fog blank. Keep the roof-specification scope distinct; no interior bulb positions are verified here.

Review the roof-specification Gemini source record

PA Nero, May 1990–December 1994, JT191

H4 low-row entry (12V60/55W / 0-02); separate high blank; fog unusually printed H4 (12V60/55W / 0-02). Preserve this unusual fog listing as a source qualification requiring actual equipment confirmation, not silently corrected to H3 or treated as universal fitment.

Review the PA Nero source record

VehiCROSS, March 1997–March 1999, UGS250W

H4 low-row entry (12V60/55W / 0-02); separate high and fog blank.

Review the VehiCROSS source record

Bighorn, January 1984–November 1991, literal UBS52系

H4 or rectangular two-lamp sealed-beam low-row alternatives; 12V60/55W / 0-02 belongs to the H4 branch, not an established sealed-beam rating. Separate high blank; H3※ fog (12V55W / 0-13), marker unresolved. A sealed-beam entry does not establish a removable H4 bulb.

Review the earlier Bighorn source record

Bighorn before minor revision, December 1991–January 1998, literal UBS25･69系

H4 low-row entry (12V60/55W / 0-02); separate high blank; H3 fog (12V55W / 0-13).

Review the pre-revision Bighorn source record

Bighorn after minor revision, February 1998–August 2002, literal UBS25･73系

H4 low-row entry (12V60/55W / 0-02); separate high blank; H3 fog (12V55W / 0-13). Preserve the changed grouped chassis rather than carrying UBS69 into this record.

Review the later Bighorn source record

Piazza, September 1991–December 1994, JT221

H4 low-row entry (12V60/55W / 0-02) and separately listed H1 high (12V55W / 0-08); H3 fog (12V55W / 0-13). Preserve this assembly-specific listing without assuming every Piazza generation uses it.

Review the Piazza source record

Fargo, September 1995–August 1999, E24

H4 or rectangular two-lamp sealed-beam low-row alternatives; 12V60/55W / 0-02 belongs to H4, not a verified sealed-beam rating. Separate high blank; H3C※ fog (12V55W / 0-14), marker unresolved. Keep H3C distinct from H3.

Review the Fargo source record

Fargo Filly, July 1997–August 1999, E50

H4 low-row entry (12V60/55W / 0-02); separate high blank; H3※ fog (12V55W / 0-13), marker unresolved.

Review the Fargo Filly source record

Filly before minor revision, September 1999–September 2000, E50

H4 low-row entry (12V60/55W / 0-02); separate high blank; H3 fog (12V55W / 0-13). Keep distinct from Fargo Filly despite shared E50 wording.

Review the earlier Filly source record

Filly after minor revision, October 2000–April 2002, E50

HB4/9006 halogen low (12V55W(51W) / 0-06) or D2R HID low (85V35W / 3503K); HB3/9005 high (12V65W(60W) / 0-05); H1 fog (12V55W / 0-08). Do not borrow earlier H4/H3.

Review the later Filly source record

MU, April 1989–November 1995, literal UCS系

Rectangular two-lamp sealed-beam headlamps; separate high blank; H1 fog (12V55W / 0-08). No removable H4 bulb or headlamp voltage/wattage/part is established.

Review the earlier MU source record

MU, December 1995–May 1998, literal UCS系

H4 low-row entry (12V60/55W / 0-02); separate high blank; H3 fog (12V35W / 0-12), not an inferred 55W H3 entry.

Review the later UCS MU source record

MU before minor revision, June 1998–April 2000, literal UER系

H4 low-row entry (12V60/55W / 0-02); separate high blank; H1 fog (12V55W / 0-08). Preserve printed UER系 as an unresolved chassis qualification rather than silently correcting it to UES系.

Review the literal UER MU source record

MU after minor revision, May 2000–August 2002, literal UES系

H4 low-row entry (12V60/55W / 0-02); separate high blank; H1 fog (12V55W / 0-08). Preserve this record’s UES label without using it to rewrite the preceding source entry.

Review the UES MU source record

MU Wizard, December 1995–May 1998, UCS69

H4 low-row entry (12V60/55W / 0-02); separate high blank; H1 fog (12V55W / 0-08). Keep MU Wizard separate from contemporary MU UCS with H3 35W fog.

Review the MU Wizard source record

Wizard before minor revision, June 1998–April 2000, literal UES系

H4 low-row entry (12V60/55W / 0-02); separate high blank; H1 fog (12V55W / 0-08).

Review the earlier Wizard source record

Wizard after minor revision, May 2000–August 2002, literal UES系

H4 low-row entry (12V60/55W / 0-02); separate high blank; H1 fog (12V55W / 0-08). Preserve the separate revision, not all-position equivalence.

Review the later Wizard source record

Rodeo, May 1988–October 1994, literal TFS50系

Rectangular two-lamp sealed-beam headlamps; separate high and fog blank. No removable H4 bulb or headlamp voltage/wattage/part is established. Do not extend this scope to other overseas Rodeo vehicles or D-Max.

Review the Rodeo source record

Blank separate high/fog fields do not establish absent functions or equipment. Preserve 702K, H3C, H3 35W/55W, unresolved ※ markers, unusual H4 fog, literal chassis and date anomalies. The markers are not silently interpreted as universal fitment. These summaries cover original headlamp/front-fog positions only, not other exterior/interior lamps or all Isuzu applications.

Identify Your Isuzu and Its Lighting

Check the identification plate, production month, original market and any lamp modifications. Compare installed bulb and housing markings with the exact source scope. Keep halogen, HID and sealed-beam equipment distinct.

Replacement and LED Conversion Checks

A matching bulb label alone does not establish conversion fitment. Confirm connector, base, retention, operating voltage, polarity, clearances and dust-cap fit. Do not infer a commercial vehicle’s electrical voltage from its brand. CANBUS labels do not guarantee freedom from flicker, dashboard warnings or hyperflashing. Confirm beam performance and suitability before use.

Ask Riglow for Isuzu Bulb-Matching Help

Supply the exact model, production date, chassis, original market and clear photographs of bulb markings, connectors and lamp assemblies. Unverified positions and source conflicts remain unresolved until actual equipment is identified.