Lewmar 66840008
Fixed Delta-type · 14, 22 or 35 lb Delta/DTX
Fixed bow-roller arrangement listed by Lewmar for Delta and DTX anchors weighing 14, 22 or 35 pounds.
Lewmar Delta Anchor Bow Rollers: Fixed vs Pivoting Fit Guide
A bow roller guides an anchor and chain over the boat's bow and helps support the anchor while stowed. Lewmar's 66840008 and 66840085 are both 304 stainless-steel assemblies, but they have different mounting geometry and anchor-weight ranges. One uses a fixed Delta-style arrangement; the other pivots. The right replacement must fit the anchor profile, bow structure and mounting area.
Check the anchor and bow before selecting a roller
Anchor type and weightLewmar lists 66840008 for 14-, 22- and 35-pound Delta/DTX anchors. Its pivoting 66840085 is listed for 22-, 35- and 45-pound Delta/DTX anchors. Other anchor shapes require checking against the actual roller.
Mounting dimensionsThe catalog uses lettered A, B, C, D, F, G and H dimensions. Measure the existing roller and compare all relevant mounting and bow-clearance dimensions with the manufacturer's drawing; a single quoted length is not enough.
Anchor retrieval and stowageConsider anchor shank shape, chain alignment, bow overhang and pulpit clearance. A pivoting design can change how the anchor is guided, but it is not automatically a drop-in replacement for a fixed roller.
Dimension terminology matters: Lewmar specifies multiple measurements for these assemblies. For model 66840008, the catalog's A dimension is 19½ inches, B is 14 13/16 inches, and H is 23 11/16 inches. For 66840085, B is 15¾ inches and H is 22 11/16 inches. These lettered measurements describe different physical reference points; do not treat the H dimension alone as the length of the mounting footprint.
Lewmar 66840008 vs 66840085 comparison
The manufacturer lists each assembly as a different model and anchor range. These measurements are provided using the original manufacturer's dimension letters, so customers can align them with its drawing rather than comparing unlike values.
| MPN | Style | Listed anchor weights | Assembly weight | Catalog dimensions | Product |
|---|---|---|---|---|---|
| 66840008 | Fixed Delta-type | 14, 22 or 35 lb Delta/DTX | 9 lb | A 19½ in; B 14 13/16 in; H 23 11/16 in | View |
| 66840085 | Pivoting | 22, 35 or 45 lb Delta/DTX | 11 lb | B 15¾ in; H 22 11/16 in | View |
Compare the two Lewmar bow rollers
Lewmar 66840085
Pivoting · 22, 35 or 45 lb Delta/DTX
Pivoting bow-roller arrangement listed by Lewmar for the 22-, 35- and 45-pound Delta/DTX anchor range.
Bow roller replacement questions
Is 66840085 a direct replacement for 66840008?
No direct interchange is established. The former is a pivoting roller with a different recommended anchor range and mounting geometry; compare the entire bow arrangement and current Lewmar dimensions.
Why does the 66840008 listing show 23 11/16 inches?
Lewmar identifies 23 11/16 inches as its H dimension. The same manufacturer chart also lists separate A and B measurements. Use the drawing's labelled dimensions when measuring the actual mounting footprint.
Can any 35-pound Delta anchor use either roller?
The manufacturer's suggested ranges overlap at 35 pounds, but anchor weight alone cannot establish fit. Confirm shank shape, roller clearances, bow hardware, mounting details and stowage geometry.
Does the bow roller replace a cleat or chain stopper?
No. The roller guides and stows the anchor, while anchoring loads should be carried by an appropriate cleat or chain stopper. A windlass also should not be the sole point holding the boat at anchor.
Related Lewmar anchoring references
- Lewmar Claw Anchors: Weight, Chain Size & Dimensions
- Lewmar Anchor Rode: Rope Diameter, Length & Gypsy Matching
Before installation, compare the Lewmar catalog dimension drawing against the boat's bow structure, secure backing and mounting hardware. Inspect roller pins and anchor restraints before cruising.
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