InterpumpAccessories & Installation

Interpump GEARBOX RS500 D. 1" FOR PUMP E3C2521

Interpump GEARBOX RS500 D is a 1-inch gearbox accessory designed for E3C2521 pump integration, featuring a 2.2 transmission ratio and maximum power transmission of 18.5 kW. SAE J609-A-B engine flange compatibility…

SKU 3G-ITP-00033

Also listed as: ZONDA5125 · ZONDA5 125

Brand

Interpump

Item

GEARBOX RS500 D. 1" FOR PUMP E3C2521

Local availability & support — the Philippines

Delivery: 5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment: Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to: Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Interpump

for pumps

47

engine flange

SAE J609-A-B 

engine shaft in

1

engine shaft mm

25.4 

transmission ratio i

2.2

weight without oil kg

4.2

max power transmission hp

25

max power transmission kw

18.5 

Datasheet Content

FE5102




TECHNICAL INFORMATION
Flow (L/min)                        2,0 / 2,4
Flow (US Gpm)                       0,52 / 0,64
Rotation regime (rpm)               1450 / 1750
Pressure (MPa)                      10
Pressure (bar)                      100
Pressure (psi)                      1450
Power (hp)                          0,57 / 0,68
Power (kW)                          0,42 / 0,50
Overall dimensions L x l x h (mm)   177x175x130
Weight (kg)                         5,2




FE5102                                            3/22/2026   Page 1 - 8
Copyright INTERPUMP GROUP S.P.A
FE5102

     Documents

Male shaft (key) - GAS

Male shaft (key) + integrated valve




FE5102                                3/22/2026   Page 2 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - GAS




FE5102                                3/22/2026   Page 3 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - GAS

Pos.     Code           Description                  Qty Notes
KIT97    34009701                                    1
KIT96    34009601                                    1
KIT86    34008601                                    1
KIT83    34008301                                    1
KIT157   34015701                                    1
KIT123   34012301       KIT 123 INTAKE/DELIVERY      1
                        VALVE
46       98210000       PLUG G3/8X13                 1
45       51209051                                    1
44       96738000       WASHER 17,5X23X1,5           1
43       98204100       PLUG G1/4X9                  1
42       36711501       INTAKE/DELIVERY VALVE        6
41       98221600                                    6
40       90384700       O-RING 20,29X2,62(3081)      6
39       36202551       VALVE CAGE                   6
38       94737600       SPRING D. 9,4X14,8           6
37       36200176       VALVE PLATE                  6
36       36200366       VALVE SEAT                   6
35       90384100       O-RING 17,12X2,62 (3068)     6
34       96693800       WASHER 6,4X10X0,7            8
33       99194300                                    8
32       51120041                                    1
31       51100051       HEAD RING D. 15              3
30       90262000       PACKING D. 15X25X5/3,1       3
29       51080070                                    3
28       90360400       O-RING 25,12X1,78 (2100)     3
27       90383500       O-RING 15,08X2,62 (119)      3
26       92221600       NUT M8X13X5                  3
25       44211570       WASHER D. 8                  3
24       51040009                                    3
23       90357300       O-RING D. 5,28X1,78 (2021)   3

22       90502200       ANTI-EXTRUSION RING          3
21       96707000                                    3
20       90156500                                    3
19       91487700       KEY 8(h9)X7X25 UNI 6604/A    1


18       51023065                                    1
17       99180700       SCREW M 6x12 UNI 5739        4
16       50150074       CRANKCASE COVER              1
15       90164100       OIL SEAL D.25X62X10          1
14       90063500       CIRCLIP D. 25 UNI 7435       1




FE5102                                                           3/22/2026   Page 4 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - GAS

Pos.   Code             Description                Qty Notes

13     91832800                                    1
12     98210300         OIL DIP-STICK G3/8X51      1
11     99186700         SCREW M 6x18 UNI 5931      4
10     51160022                                    1
9      90391700                                    1
8      97731000                                    3
7      51030122                                    3
6      51050056                                    3
5      97596800         OIL LEVEL INDICATOR G3/4X15 1


4      91801400                                    1
3      90383300         O-RING 13,95X2,62 (3056)   1
2      98210050         PLUG G3/8x13 TE22          1
1      51010622                                    1




FE5102                                                         3/22/2026   Page 5 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) + integrated valve




FE5102                                             3/22/2026   Page 6 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) + integrated valve

Pos.     Code           Description                Qty Notes
KIT97    34009701                                  1
KIT96    34009601                                  1
KIT86    34008601                                  1
KIT83    34008301                                  1
KIT267   34026701                                  1
KIT157   34015701                                  1
KIT123   34012301       KIT 123 INTAKE/DELIVERY    1
                        VALVE
62       51209051                                  1
61       36005470                                  1
60       99126100                                  1
59       94740000                                  1
58       36323770                                  1
57       90502000                                  1
56       90357000       O-RING 4,48X1,78 (2018)    1
55       90356900                                  1
54       90500700                                  1
53       36005570                                  1
52       36323966                                  1
51       10008566                                  1
50       90357600                                  1
49       36005670                                  1
48       90382300       O-RING 9,92X2,62 (112)     1
47       98210000       PLUG G3/8X13               1
46       96738000       WASHER 17,5X23X1,5         1
45       98205700       PLUG M14X1,5X9             1
44       98204100       PLUG G1/4X9                2
43       10007870       NIPPLE D. 3 G3/8           1
42       36711501       INTAKE/DELIVERY VALVE      6
41       98221600                                  6
40       90384700       O-RING 20,29X2,62(3081)    7
39       36202551       VALVE CAGE                 6
38       94737600       SPRING D. 9,4X14,8         6
37       36200176       VALVE PLATE                6
36       36200366       VALVE SEAT                 6
35       90384100       O-RING 17,12X2,62 (3068)   2
34       96693800       WASHER 6,4X10X0,7          1
33       99194300                                  1
32       51120141                                  1
31       51100051       HEAD RING D. 15            3
30       90262000       PACKING D. 15X25X5/3,1     3




FE5102                                                         3/22/2026   Page 7 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) + integrated valve

Pos.   Code             Description                  Qty Notes

29     51080070                                      3
28     90360400         O-RING 25,12X1,78 (2100)     3
27     90383500         O-RING 15,08X2,62 (119)      3
26     92221600         NUT M8X13X5                  3
25     44211570         WASHER D. 8                  3
24     51040009                                      3
23     90357300         O-RING D. 5,28X1,78 (2021)   3


22     90502200         ANTI-EXTRUSION RING          3
21     96707000                                      3
20     90156500                                      3
19     91487700         KEY 8(h9)X7X25 UNI 6604/A    1


18     51023065                                      1
17     99180700         SCREW M 6x12 UNI 5739        4
16     50150074         CRANKCASE COVER              1
15     90164100         OIL SEAL D.25X62X10          1
14     90063500         CIRCLIP D. 25 UNI 7435       1
13     91832800                                      1
12     98210300         OIL DIP-STICK G3/8X51        1
11     99186700         SCREW M 6x18 UNI 5931        4
10     51160022                                      1
9      90391700                                      1
8      97731000                                      3
7      51030122                                      3
6      51050056                                      3
5      97596800         OIL LEVEL INDICATOR G3/4X15 1


4      91801400                                      1
3      90383300         O-RING 13,95X2,62 (3056)     2
2      98210050         PLUG G3/8x13 TE22            1
1      51010622                                      1




FE5102                                                           3/22/2026   Page 8 - 8
Copyright INTERPUMP GROUP S.P.A

Technical Documents

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Technical Data Sheet

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Interpump Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

Where can I buy an Interpump GEARBOX RS500 D gearbox in the Philippines?

3G Electric Philippines sources and delivers the Interpump GEARBOX RS500 D to Manila, Quezon City, and throughout the Philippines. We handle Bureau of Customs documentation, logistics, and PHP invoicing. Lead time on request.

What is the lead time for delivery of the Interpump RS500 gearbox to the Philippines?

Lead time varies based on current availability. Contact 3G Electric Philippines for a confirmed delivery schedule. We manage all shipping logistics and customs clearance to your location.

What pump models is the Interpump GEARBOX RS500 D compatible with?

The Interpump GEARBOX RS500 D is designed for E3C2521 pump integration. It features SAE J609-A-B engine flange compatibility, 1" (25.4 mm) shaft input, and 18.5 kW maximum power transmission with 2.2 transmission ratio.

Used in

Common applications for Interpump

Shipyard hull cleaning and surface prep — HT100 and W951 paired with dual-lance guns for dockyard service

Petrochemical heat-exchanger descaling — WS-series stainless pumps for neutral-pH cleaning chemistry

Outdoor HVAC condenser mist cooling — ZP180 pumps on rooftop chiller decks

Textile fibre-finishing — W170 and W270 for mist-jet application across drying lines

Municipal water treatment — W951 motor pumps for high-pressure disinfection chemical injection

Interpump Products

3G Electric supplies Interpump accessories & installation. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

Browse all Interpump products →Contact our engineers →