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IDENTIFICATION CHART

Identify which Harken jib furler family you have (MKI, MKII, MKIII, 00AL, MKIV, Cruising, ESP) and its unit size, so you order the right replacement parts.

DocumentHarken Jib Furler Identification Chart
FormatPDF · 1 page · 0.3 MB
LanguageEnglish
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FamilyUnit SizeOrdering PartsProducts
Harken Jib Furler Identification Chart

Family Identification

Family Line guard Spool Torque tube Screws near torque tube base Unit number / date
MKI Stainless cup, one opening Gray-anodized aluminum Straight cylinder Yes Size and date stamped on top of spool
MKII Stainless curved plate secured to gray aluminum, single line opening Gray plastic Tapered Yes No size marked (see size chart). Date on hub of halyard swivel and lower unit (remove split drum)
MKIII Black aluminum guard, 4 openings, 2 for line Black plastic Tapered Yes No size marked (see size chart). Date on hub of halyard swivel and lower unit (remove split drum)
00AL Black aluminum guard, 4 openings, 2 for line Black plastic Tapered top No No size marked (see size chart). Date on halyard swivel and lower unit (remove drum)
MKIV Black aluminum guard, 4 openings, 2 for line Black plastic Tapered top No Size on label, no date
Cruising Black aluminum guard, 4 openings, 2 for line Black plastic Straight cylinder No Size on label, no date
ESP Stainless steel guards, 5 openings, 1 for line Black plastic None Hub extension connects to foils with set screws Measure drum Ø

Cruising and ESP foils have a single sail groove; all other families have two. Some parts for older furlers may no longer be available.

Harken jib furler family identification photos

Size Identification (MKI, MKII, MKIII, 00AL, ESP)

MKIV and Cruising furlers have the unit size printed on the label. For older units measure the drum diameter across the top of the drum, the clevis pin diameter and the torque tube length.

Unit size Drum Ø in Drum Ø mm Clevis pin Ø in Clevis pin Ø mm Torque tube in Torque tube mm
00AL 5 3/4 146 1/4, 5/16, 3/8, 7/16 6, 8, 9.5, 11.1 9 1/2 241
0 5 13/16 147 5/16, 3/8, 7/16 8, 9.5, 11.1 5 7/8 150
1 7 7/16 188 1/2 12.7 7 7/16 189
1.5 7 7/16 188 5/8 15.9 13 330
2 9 1/2 241 5/8 15.9 10 5/16 262
2.5 9 1/2 241 3/4 19.1 17 1/4 438
3 12 305 3/4, 7/8 19.1, 22.2 13 330
3.25 12 305 7/8, 1 22.2, 25.4 15 381
ESP 0 6 1/2 166 5/16, 3/8 8, 9.5 — —
ESP 1 8 200 7/16, 1/2 11, 12.7 — —
ESP 2 9 7/8 250 5/8, 3/4 15.9, 19.1 — —
ESP 3 11 3/4 298 7/8, 1 22.2, 25.4 — —

Units 1 and 1.5 share the same drum; units 2 and 2.5, and 3 and 3.25, too. Tell them apart by clevis pin and torque tube length.

Ordering Parts

  • Give us the family, the unit size and, where marked, the date of manufacture.
  • Harken publishes the parts list for each family and size in its manuals; MKIV and ESP spares we stock are in the linked collection.

Need a part that isn't listed? Ask us to source it and quote the part number from the PDF.

Products in this Selection Guide