---
product_id: 543345798
title: "Boat Engine 21-42990A7 42990A8 42990A9 42990A10 857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner Quicksilver 35 40 45 50 55 60 65 75 80 90 100 115 125 135 150 175 200 275 HP, fit Sierra 18-7817"
price: "€ 43.79"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/543345798-boat-engine-21-42990a7-42990a8-42990a9-42990a10-857005a1-fuel-pump
store_origin: FI
region: Finland
---

# Boat Engine 21-42990A7 42990A8 42990A9 42990A10 857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner Quicksilver 35 40 45 50 55 60 65 75 80 90 100 115 125 135 150 175 200 275 HP, fit Sierra 18-7817

**Price:** € 43.79
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Boat Engine 21-42990A7 42990A8 42990A9 42990A10 857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner Quicksilver 35 40 45 50 55 60 65 75 80 90 100 115 125 135 150 175 200 275 HP, fit Sierra 18-7817
- **How much does it cost?** € 43.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/543345798-boat-engine-21-42990a7-42990a8-42990a9-42990a10-857005a1-fuel-pump)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Boat Engine 21-42990A7 42990A8 42990A9 42990A10 857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner Quicksilver 35 40 45 50 55 60 65 75 80 90 100 115 125 135 150 175 200 275 HP, fit Sierra 18-7817

## Images

![Boat Engine 21-42990A7 42990A8 42990A9 42990A10 857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner Quicksilver 35 40 45 50 55 60 65 75 80 90 100 115 125 135 150 175 200 275 HP, fit Sierra 18-7817 - Image 1](https://m.media-amazon.com/images/I/61HcjF2Iv5L.jpg)

---

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**Shop now:** [https://www.desertcart.fi/products/543345798-boat-engine-21-42990a7-42990a8-42990a9-42990a10-857005a1-fuel-pump](https://www.desertcart.fi/products/543345798-boat-engine-21-42990a7-42990a8-42990a9-42990a10-857005a1-fuel-pump)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-20*