Johnson Pump F5B Impeller Kit 09-1027B-1 | Replaces Jabsco 1210-0001

Name: Johnson Pump F5B Impeller Kit 09-1027B-1 | Replaces Jabsco 1210-0001
Brand: LNS
SKU: 189-091027B1
Price: 90.39 CAD
Availability: InStock

$90.39 - $90.39

$90.39

$90.39 - $90.39

$90.39

Item locally warehoused

Free returns on all eligible orders

You have 30 days to request a return. All sale items are final sale.

Johnson Pump F5B Impeller Kit 09-1027B-1

Part Number: 09-1027B-1 (also shown as 091027B1)

The Johnson Pump 09-1027B-1 is a genuine F5 / F5B flexible impeller kit for marine engine raw-water cooling pumps. It uses Johnson’s MC97 / EPDM cooling-water compound in a 12-blade, splined-drive configuration and directly replaces Jabsco 1210-0001.

Impeller Specifications

Pump family: Johnson Pump F5 / F5B
Material: MC97 / EPDM cooling-water compound
Number of blades: 12
Drive type: Splined hub
Outside diameter: 2.25 in. / 57.1 mm
Width: 1.24 in. / 31.5 mm

Compatible Applications

Johnson identifies 09-1027B-1 for F5 and F5B pump assemblies. OEM cross-references associate this kit with cooling systems on engines from:

Volvo Penta — including 3.0L, 4.3L, 5.0L, 5.7L, 7.4L, and 8.2L gasoline-engine families where an F5B pump is fitted
Perkins
Onan
Yanmar
Westerbeke / Universal
Vetus
Sole Diesel
Mase

Always confirm fitment by matching the existing pump model and impeller number. Do not select by engine brand or diameter alone.

Fitment Notice

Before ordering, confirm:

Existing impeller number
Pump manufacturer, model, and F5 / F5B designation
12-blade configuration
Splined drive hub
Outside diameter: 2.25 in. / 57.1 mm
Width: 1.24 in. / 31.5 mm

Johnson makes other F5 impellers with the same basic diameter but different hub or material specifications. The full impeller number is the safest fitment reference.

OEM & Cross-Reference Part Numbers

Johnson Pump

09-1027B-1 / 091027B1
08-1027B-1 / 08-1027BT / 09-1027BT (superseded references)

Jabsco

1210-0001

Volvo Penta

825940 / 860203 / 875811 / 21213660 / 21951346

Onan

131-0050 / 132-0162

Perkins

24880190 / 460038

Yanmar

129470-42530 / 129670-42610

Westerbeke / Universal

302571

When to Replace the Impeller

Cooling-water flow becomes weak or intermittent
Vanes are cracked, torn, stiff, or permanently deformed
Missing blade material is found — inspect all downstream cooling passages for fragments before reassembly
Pump has been run dry
Engine has experienced overheating
Annual raw-water pump maintenance is due

Installation Notes

Shut off the raw-water intake before beginning work
Remove the pump cover and extract the old impeller
Inspect the old impeller for missing vane pieces — locate all fragments before closing up
Inspect the cam, cover plate, and pump chamber for scoring or wear
Confirm the splined hub engages the pump shaft correctly before seating the impeller
Lubricate the new impeller with approved water-safe impeller lubricant
Replace applicable gasket or O-ring components
Rotate the pump shaft in its normal operating direction while seating the impeller
Verify strong cooling-water flow immediately after startup

Related Parts

Parts Desk Insights

The Johnson 09-1027B-1 is one of the most widely used F5B impellers in the market, covering a broad range of Volvo Penta gasoline engines (3.0L through 8.2L) as well as Westerbeke, Onan, Yanmar, and Perkins diesel applications where an F5B pump is fitted. The Jabsco 1210-0001 cross-reference is particularly useful when servicing older installations where a Johnson pump number isn’t readily available. The five Volvo Penta OEM references (825940, 860203, 875811, 21213660, 21951346) cover different model-year applications within this pump family.

The most common ordering issue is selecting an F5 impeller by outside diameter alone. Johnson produces multiple F5 variants with the same 2.25 in. diameter but different hub styles, blade counts, or material compounds. The 12-blade splined configuration of the 09-1027B-1 is the defining feature, and matching the full impeller number is the only reliable way to confirm the right kit. As always, check the old impeller for missing vane pieces before reinstalling the pump cover — fragments in the cooling circuit are a frequent cause of continued overheating even after a successful impeller replacement.

Shipping information

In-stock and OEM parts: ship same or next business day.

Locally warehoused items: ship within 1-3 business days.

Special-order items: timeline confirmed after order.

Returns & warranty

Returns & Satisfaction Guarantee

We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.

If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.

To qualify for a return:

Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale

Important:

Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.

We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.

For return authorization, please contact our support team before shipping anything back.