Grundfos CR CRN 185 Wear Parts Kit 36mm Shaft 1–4 Stages 99262421 #5040

Grundfos CR / CRN 185 Wear Parts Kit – 36mm Shaft – 1–4 Stages – 99262421 – #5040

Genuine Grundfos wear parts kit 99262421 for compatible CR 185 and CRN 185 vertical multistage pumps with a 36mm pump shaft and 1–4 stages. This service kit contains replacement internal seal rings, retainers, bushes, bush lock rings and an adjusting fork for servicing the pump’s hydraulic assembly.

Suitable for planned maintenance or repair where inspection identifies wear in these components. Exact compatibility should be checked against the pump’s eight-digit Grundfos product number. Our researched manufacturer references are listed at the bottom of this description.

Product Details

Manufacturer-Specified Kit Contents

Grundfos lists the following components for kit 99262421. Position numbers refer to the manufacturer’s service drawings.

This is a wear parts kit, not a complete pump overhaul package. The manufacturer’s contents list does not include a mechanical shaft seal, impellers, pump shaft, complete chamber stack, complete bearing assembly or a separate pump O-ring kit.

Compatibility Guidance

Match 99262421 to the recommended spare parts for your pump’s exact product number. “CR 185”, “CRN 185”, a 36mm shaft or a similar appearance alone should not be used as the final compatibility check.

The list below includes manufacturer-confirmed references with different connections, pump versions and mechanical shaft-seal codes. Those differences remain relevant when ordering any additional service parts.

Frequently Asked Questions

What does this wear parts kit replace?

It replaces the internal seal rings, their retainers, bushes and bush lock rings specified in the contents table. These components form part of the pump’s hydraulic assembly. Their condition is relevant to internal clearances and correct operation of the chamber stack.

Is this a mechanical shaft seal kit?

No. The “seal rings” in this kit are internal hydraulic components. They are separate from the mechanical shaft seal that seals around the rotating shaft where it passes through the pump head. If the mechanical shaft seal needs replacement, order its correct service kit separately.

What does the 36mm measurement mean?

It is the pump shaft diameter specified in Grundfos’s wear-parts selection table. It is not the pipe connection size, flange diameter or a measurement to use on its own when selecting a mechanical shaft seal.

What does “1–4 stages” mean?

A multistage pump passes the liquid through successive impeller stages. This kit is catalogued for compatible CR / CRN 185 pumps with one to four stages. The first stage number after “185” identifies the number of impellers.

What does a model such as CR 185-4-3 mean?

In this example, “4” indicates four impellers and the following “3” indicates three reduced-diameter impellers. It does not mean seven stages. The complete model designation and product number must still be checked when choosing service parts.

Do I need four kits for a four-stage pump?

Grundfos supplies 99262421 as a kit for the 1–4 stage range, containing four seal rings and four retainers. It is not listed as a single-stage kit that must automatically be purchased four times. The parts used during servicing depend on the pump’s actual construction and stage count.

Can I use this kit on a five-stage or larger pump?

Do not select it as the complete wear kit for those pumps. Grundfos lists 99262430 separately for CR / CRN 185 pumps with a 36mm shaft in the 5–8 stage range. Always check the exact pump’s recommended spare parts before ordering.

Does it fit both CR 185 and CRN 185 pumps?

Yes, Grundfos lists this kit for compatible versions of both families. Our reference list below contains individually checked CR 185 and CRN 185 product numbers. Compatibility with one model should not be extended automatically to every pump in either family.

Will it fit CR / CRN 155, 215 or 255 pumps with a 36mm shaft?

A matching shaft diameter does not make the kits interchangeable. Grundfos assigns different wear kit numbers to those pump sizes. Kit 99262421 is the catalogue selection for the CR / CRN 185 size in the specified stage range.

Why do the compatibility references include HQQE, HQQV, HQBE and HQBV?

These are mechanical shaft-seal codes within the complete pump designation. Different shaft-seal configurations can share the same hydraulic wear parts kit. The references below were checked for kit 99262421 individually; the shaft-seal code alone is not the selection rule for this kit.

Is a complete bearing assembly included?

No. The listed bushes and their lock rings should not be confused with the separately catalogued complete bearing assembly. Any additional bearing, thrust-handling or shaft-seal parts must be selected for the exact pump.

What is the adjusting fork for?

It is a service tool used during the prescribed assembly and adjustment procedure. Follow the relevant Grundfos service instructions for its use. Correct shaft positioning matters: Grundfos identifies incorrect shaft position as a possible cause of friction and pump noise.

Will this kit automatically cure low pressure, noise or leakage?

No. These symptoms require diagnosis before parts are replaced. Worn hydraulic components are one possible issue, but inlet conditions, damaged impellers, bearing condition, shaft adjustment and the mechanical shaft seal may require separate attention. Replace the components identified by inspection.

Does the kit have a voltage or motor power rating?

It contains mechanical service parts and has no electrical supply requirement. Motor voltage and power do not establish wear-kit compatibility; use the pump product number and manufacturer’s spare-parts specification.

Can I confirm suitability from photographs alone?

Photographs help identify the supplied item, but the best compatibility check is the exact Grundfos kit number against the pump’s nameplate product number. Similar-looking rings and bushes can belong to different pump sizes.

Manufacturer Documentation

• Grundfos CR / CRN 95–255 Service Parts Catalogue – see page 11 for wear kit 99262421, its shaft size, stage range and component quantities.
• Grundfos CR / CRI / CRN Data Booklet – pump construction and type-designation guidance.
• Grundfos CR / CRI / CRN Installation and Operating Instructions – operating, maintenance and fault-finding guidance.
• Grundfos Product Center – search using the pump’s eight-digit product number and check its recommended spare parts.

Delivery & Shipping

• Free UK shipping.
• Orders placed before 4pm are dispatched the next working day.
• Same-day courier options are available; please telephone for a quotation.
• International shipping is available, with the shipping cost confirmed after checkout.

About Our Stock

The Pump Dealer supplies surplus pumps and replacement parts. This item is offered as new and unused surplus stock with a 2-year dealer guarantee. Please quote #5040 and Grundfos 99262421 when enquiring.

Pump Compatibility – Confirmed Grundfos References

We searched Grundfos’s published product records and checked the recommended spare parts for the references below. All 163 listed pump product numbers specify wear parts kit 99262421: 76 CR references and 87 CRN references.

Each entry shows the complete published pump designation followed by its eight-digit pump product number. Identical model names with different product numbers are retained because they identify separate manufacturer records.

These are the confirmed references found during our research, not a claim to cover every historical, regional or specially configured pump. Match your nameplate product number before ordering.

Grundfos CR 185 – 76 Confirmed References

• CR 185-1 A-F-A-E-HQQE — 99143712
• CR 185-1 A-F-A-E-HQQE — 99143800
• CR 185-1 A-F-A-E-HQQE — 99143957
• CR 185-1 A-F-A-V-HQBV — 99179707
• CR 185-1 A-F-A-V-HQQV — 99143724
• CR 185-1 A-F-A-V-HQQV — 99143813
• CR 185-1-1 A-F-A-E-HQBE — 99179659
• CR 185-1-1 A-F-A-E-HQQE — 92655541
• CR 185-1-1 A-F-A-E-HQQE — 99143711
• CR 185-1-1 A-F-A-V-HQBV — 99179706
• CR 185-1-1 A-F-A-V-HQBV — 99181544
• CR 185-1-1 A-F-A-V-HQQV — 93390614
• CR 185-1-1 A-F-A-V-HQQV — 99143723
• CR 185-1-1 A-F-A-V-HQQV — 99143964
• CR 185-1-1 B-F-A-E-HQQE — 99978358
• CR 185-1-1 E-F-A-E-HQQE — 93550104
• CR 185-2 A-F-A-E-HQBE — 99179662
• CR 185-2 A-F-A-E-HQQE — 92501238
• CR 185-2 A-F-A-E-HQQE — 93215888
• CR 185-2 A-F-A-E-HQQE — 99143714
• CR 185-2 A-F-A-E-HQQE — 99143802
• CR 185-2 A-F-A-V-HQBV — 99179709
• CR 185-2 A-F-A-V-HQQV — 93435357
• CR 185-2 A-G-A-E-HQQE — 99400426
• CR 185-2-1 A-F-A-E-HQQE — 92795620
• CR 185-2-1 A-G-A-E-HQQE — 99967000
• CR 185-2-1 A-G-A-V-HQQV — 99967001
• CR 185-2-2 A-F-A-E-HQBE — 99179661
• CR 185-2-2 A-F-A-E-HQQE — 92582455
• CR 185-2-2 A-F-A-E-HQQE — 99143713
• CR 185-2-2 A-F-A-E-HQQE — 99143801
• CR 185-2-2 A-F-A-V-HQQV — 99143814
• CR 185-2-2 E-J-A-E-HQQE — 93111305
• CR 185-3 A-F-A-E-HQQE — 92905817
• CR 185-3 A-F-A-E-HQQE — 92992159
• CR 185-3 A-F-A-E-HQQE — 93492073
• CR 185-3 A-F-A-E-HQQE — 99143716
• CR 185-3 A-F-A-V-HQBV — 92906210
• CR 185-3 A-F-A-V-HQQV — 92601635
• CR 185-3 A-F-A-V-HQQV — 92905938
• CR 185-3 A-F-A-V-HQQV — 93175743
• CR 185-3 A-G-A-E-HQQE — 92836005
• CR 185-3 A-G-A-E-HQQE — 99400428
• CR 185-3 A-J-A-V-HQQV — 99143917
• CR 185-3-1 A-G-A-E-HQQE — 99971172
• CR 185-3-1 A-G-A-E-HQQE — 99971351
• CR 185-3-3 A-F-A-E-HQBE — 99179663
• CR 185-3-3 A-F-A-E-HQQE — 93435317
• CR 185-3-3 A-F-A-E-HQQE — 99143715
• CR 185-3-3 A-F-A-E-HQQE — 99143804
• CR 185-3-3 A-F-A-V-HQBV — 99179710
• CR 185-3-3 A-F-A-V-HQQV — 92501256
• CR 185-3-3 A-F-A-V-HQQV — 93435358
• CR 185-3-3 A-F-A-V-HQQV — 99143727
• CR 185-3-3 E-F-A-E-HQQE — 93044291
• CR 185-4 A-F-A-E-HQBE — 92906152
• CR 185-4 A-F-A-E-HQQE — 92501317
• CR 185-4 A-F-A-E-HQQE — 92805986
• CR 185-4 A-F-A-E-HQQE — 92905909
• CR 185-4 A-F-A-E-HQQE — 99972987
• CR 185-4 A-F-A-V-HQBV — 92906217
• CR 185-4 A-F-A-V-HQQV — 92905940
• CR 185-4 A-G-A-E-HQQE — 99400430
• CR 185-4 A-J-A-V-HQQV — 99144092
• CR 185-4-1 A-G-A-V-HQQV — 99971390
• CR 185-4-3 A-F-A-E-HQBE — 92906151
• CR 185-4-3 A-F-A-E-HQBE — 99179665
• CR 185-4-3 A-F-A-E-HQQE — 92543577
• CR 185-4-3 A-F-A-E-HQQE — 92600478
• CR 185-4-3 A-F-A-E-HQQE — 92905908
• CR 185-4-3 A-F-A-E-HQQE — 99143717
• CR 185-4-3 A-F-A-V-HQBV — 92906212
• CR 185-4-3 A-F-A-V-HQBV — 99179712
• CR 185-4-3 A-F-A-V-HQQV — 92905939
• CR 185-4-3 A-F-A-V-HQQV — 99143970
• CR 185-4-3 E-F-A-E-HQQE — 92951641

Grundfos CRN 185 – 87 Confirmed References

• CRN 185-1 A-F-A-E-HQQE — 93436103
• CRN 185-1 A-F-A-E-HQQE — 99143736
• CRN 185-1 A-F-A-V-HQBV — 99181138
• CRN 185-1 A-F-A-V-HQBV — 99181732
• CRN 185-1 A-F-A-V-HQQV — 93436111
• CRN 185-1 A-F-A-V-HQQV — 99143752
• CRN 185-1 A-F-A-V-HQQV — 99143841
• CRN 185-1 A-P-A-E-HQBE — 99181271
• CRN 185-1 A-P-A-E-HQBE — 99181810
• CRN 185-1 A-P-A-E-HQQE — 93436076
• CRN 185-1 A-P-A-E-HQQE — 99144055
• CRN 185-1 A-P-A-V-HQBV — 99181384
• CRN 185-1 A-P-A-V-HQBV — 99181879
• CRN 185-1 A-P-A-V-HQQV — 99143784
• CRN 185-1 B-G-A-E-HQQE — 93399094
• CRN 185-1-1 A-F-A-V-HQBV — 99181731
• CRN 185-1-1 A-F-A-V-HQQV — 99143751
• CRN 185-1-1 A-G-A-E-HQQE — 99400439
• CRN 185-1-1 A-G-A-V-HQQV — 99400451
• CRN 185-1-1 A-P-A-E-HQBE — 99181270
• CRN 185-1-1 A-P-A-E-HQQE — 99144054
• CRN 185-1-1 A-P-A-E-HQQE — 99400464
• CRN 185-1-1 E-F-A-E-HQQE — 93042308
• CRN 185-2 A-F-A-E-HQBE — 99179877
• CRN 185-2 A-F-A-E-HQQE — 93337061
• CRN 185-2 A-F-A-E-HQQE — 99143738
• CRN 185-2 A-F-A-V-HQBV — 99181141
• CRN 185-2 A-G-A-E-HQQE — 99145360
• CRN 185-2 A-P-A-E-HQBE — 99181273
• CRN 185-2 A-P-A-E-HQQE — 93435381
• CRN 185-2 A-P-A-E-HQQE — 99143859
• CRN 185-2 A-P-A-E-HQQE — 99400468
• CRN 185-2 A-P-A-V-HQBV — 99181386
• CRN 185-2 A-P-A-V-HQQV — 92501243
• CRN 185-2 E-F-A-E-HQQE — 93499765
• CRN 185-2-1 A-F-A-E-HQQE — 92905799
• CRN 185-2-1 A-F-A-V-HQQV — 99921505
• CRN 185-2-1 A-G-A-V-HQQV — 99971302
• CRN 185-2-1 A-P-A-E-HQQE — 99918664
• CRN 185-2-2 A-F-A-E-HQQE — 92503562
• CRN 185-2-2 A-F-A-E-HQQE — 93435432
• CRN 185-2-2 A-F-A-V-HQQV — 93609393
• CRN 185-2-2 A-F-A-V-HQQV — 99143842
• CRN 185-2-2 A-G-A-E-HQQE — 99400441
• CRN 185-2-2 A-P-A-E-HQQE — 99143858
• CRN 185-2-2 A-P-A-V-HQQV — 93435407
• CRN 185-2-2 E-F-A-E-HQBE — 93378973
• CRN 185-3 A-F-A-E-HQQE — 92905802
• CRN 185-3 A-F-A-E-HQQE — 99143740
• CRN 185-3 A-F-A-V-HQQV — 99919972
• CRN 185-3 A-P-A-E-HQQE — 92906056
• CRN 185-3 A-P-A-E-HQQE — 99145390
• CRN 185-3 A-P-A-E-HQQE — 99920099
• CRN 185-3 A-P-A-V-HQQV — 92906120
• CRN 185-3 E-J-A-E-HQBE — 93006582
• CRN 185-3-1 A-F-A-V-HQQV — 99919955
• CRN 185-3-1 A-G-A-E-HQQE — 99971184
• CRN 185-3-1 A-G-A-V-HQQV — 99971364
• CRN 185-3-1 A-P-A-E-HQQE — 99971186
• CRN 185-3-1 A-P-A-V-HQQV — 99971366
• CRN 185-3-2 A-P-A-V-HQQV — 99145414
• CRN 185-3-3 A-F-A-E-HQQE — 99143828
• CRN 185-3-3 A-G-A-E-HQQE — 99971168
• CRN 185-3-3 A-P-A-E-HQBE — 99181274
• CRN 185-3-3 A-P-A-V-HQQV — 99143876
• CRN 185-4 A-F-A-E-HQQE — 92905718
• CRN 185-4 A-F-A-E-HQQE — 99143831
• CRN 185-4 A-F-A-E-HQQE — 99143979
• CRN 185-4 A-F-A-V-HQBV — 99181737
• CRN 185-4 A-F-A-V-HQQV — 92501326
• CRN 185-4 A-F-A-V-HQQV — 99143758
• CRN 185-4 A-F-A-V-HQQV — 99143990
• CRN 185-4 A-P-A-E-HQQE — 92501328
• CRN 185-4 A-P-A-V-HQQV — 92906122
• CRN 185-4 A-P-A-V-HQQV — 99143790
• CRN 185-4 A-P-A-V-HQQV — 99144072
• CRN 185-4-1 A-G-A-V-HQQV — 99971222
• CRN 185-4-1 A-P-A-E-HQQE — 99971403
• CRN 185-4-1 A-P-A-V-HQQV — 99971234
• CRN 185-4-2 A-P-A-E-HQQE — 99971387
• CRN 185-4-3 A-F-A-E-HQQE — 92905877
• CRN 185-4-3 A-F-A-E-HQQE — 93049866
• CRN 185-4-3 A-F-A-E-HQQE — 99143978
• CRN 185-4-3 A-F-A-V-HQQV — 99143757
• CRN 185-4-3 A-F-A-V-HQQV — 99143989
• CRN 185-4-3 A-P-A-E-HQQE — 99400472
• CRN 185-4-3 A-P-A-V-HQQV — 99144011

Reference check completed on 20 October 2026 using Grundfos product records and their recommended spare-parts listings. The numbers at the ends of the entries identify complete pumps; the replacement kit offered here is 99262421.

Technical information is based on the manufacturer documentation linked above. Installation and adjustment should follow the service instructions for the exact pump version.