---
product_id: 73330010
title: "9603 OE Fine Wire Double Iridium Spark Plug - Advanced Original Equipment Technology with 4X Life - Pack of 4"
brand: "bosch"
price: "Rp1317075"
currency: IDR
in_stock: true
reviews_count: 13
category: "Bosch"
url: https://www.desertcart.id/products/73330010-9603-oe-fine-wire-double-iridium-spark-plug-advanced-original
store_origin: ID
region: Indonesia
---

# 4X longer lifespan 24% less voltage needed Corrosion-resistant threads 9603 OE Fine Wire Double Iridium Spark Plug - Advanced Original Equipment Technology with 4X Life - Pack of 4

**Brand:** bosch
**Price:** Rp1317075
**Availability:** ✅ In Stock

## Summary

> ⚡ Spark your engine’s potential with Bosch Double Iridium – where longevity meets performance!

## Quick Answers

- **What is this?** 9603 OE Fine Wire Double Iridium Spark Plug - Advanced Original Equipment Technology with 4X Life - Pack of 4 by bosch
- **How much does it cost?** Rp1317075 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/73330010-9603-oe-fine-wire-double-iridium-spark-plug-advanced-original)

## Best For

- bosch enthusiasts

## Why This Product

- Trusted bosch brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ignite with Precision:** 360° laser-welded ultra-fine iridium wire ensures lightning-fast, reliable sparks every time.
- • **OE-Grade Compatibility:** Meets or exceeds original equipment specs for modern GDI engines—trusted by top automakers worldwide.
- • **Plug & Play Performance:** Factory pre-gapped and ready to install—no adjustments, no delays, just instant upgrade.
- • **Engineered for Endurance:** Double iridium electrodes deliver 4X the lifespan of standard plugs—less hassle, more miles.
- • **Corrosion-Proof Installation:** Nickel-plated rolled threads resist galling and eliminate the need for anti-seize—save time and stress.

## Overview

Bosch 9603 OE Fine Wire Double Iridium Spark Plugs combine advanced iridium technology and precision engineering to deliver superior ignitability with 24% less voltage, 4X longer life than copper plugs, and corrosion-resistant nickel-plated threads. Pre-gapped and OE-matched for modern gasoline and GDI engines, these plugs ensure hassle-free installation and reliable performance across a wide range of vehicles.

## Description

Bosch OE Fine Wire Double Iridium Spark Plugs are engineered to deliver both high performance and long life, representing advanced original equipment (OE) spark plug technology. The ultra-fine wire design and laser welded tapered ground electrode deliver optimum performance, while the iridium center electrode and iridium ground electrode inlay help it to go the distance. OE-matched spark position ensures compatibility with Gasoline Direct Injection (GDI) technology used in modern gas engines. Bosch OE Fine Wire Double Iridium spark plugs are pre-gapped at the factory and ready to install right out of the box - gap adjustment prior to installation not required. The Nickel-plated rolled threads provide maximum resistance to corrosion - ensuring the spark plug removes easily from the cylinder head without galling - and do not require anti-seize during installation - saving time. Bosch Double Iridium Spark Plugs meet or exceed manufacturer design requirements for OE fit, form, and function for modern gasoline engines. Unlock the performance in your engine with Bosch Double Iridium Spark Plugs.

Review: Good - Fit my outback well and works good
Review: Didn’t think I needed them - 2012 2.5 Toyota engine running smooth, exceeding freeway mileage rating in mixed driving, 80000 miles with Carfax reported plug change at 50000 - what difference will replacement spark plugs make? Give it try. $30 and a half hour of work. Old ones were factory spec and visibly but not terribly crusty/worn, so maybe Carfax was wrong about the early replacement by the former owner; still, oem are rated for 100k-120k. Result? Perceptibly smoother engine; 100 lower idle RPM; 1.5 mpg improvement. So yeah, significant improvement. Moral: a good DIY project but if I had been faced with a $300 shop estimate…. Observation: those casual mechanics hanging looking to install basic parts around car parts shops probably do more to keep 7-year + vehicles on the road than dealerships who think in terms of $300-$500-$700 price points.

## Features

- Bosch OE Fine Wire Double Iridium Spark Plugs feature both an iridium firing pin and an iridium ground electrode inlay that offer higher performance and 4X longer life compared to standard copper spark plugs
- 360-degree laser welded ultra-fine wire iridium firing pin provides better ignitability - reducing voltage requirements up to 24% - and enhanced durability
- Nickel-plated rolled threads provide maximum resistance to corrosion - ensuring the spark plugs unthread easily from the cylinder head without galling - and do not require anti-seize during installation - saving time
- Bosch OE Fine Wire Double Iridium spark plugs are pre-gapped at the factory and ready to install right out of the box - gap adjustment prior to installation not required
- Meets or exceeds manufacturer design requirements for OE fit, form, and function for modern gasoline engines - including Gasoline Direct Injection (GDI) engines
- Compatible with select vehicles including, but not limited to, the following (Note: engine affects fitment - verify specific fitment details with fit checker above): ACURA: 92-01 Integra, 91-95 Legend, 91-05 NSX; HONDA: 11-16 CR-Z; JAGUAR: 01 XJ8
- Compatible with (cont): JAGUAR: 98-01 XJR, 00-02 XKR; LEXUS: 94-06 ES300/330, 98-00 GS400, 01-07 GS430, 03-09 GX470, 10-12 HS250h, 90-94,97-00 LS400, 01-06 LS430, 98-07 LX470, 99-06 RX300/330, 06-08 RX400h, 92-94 SC300, 92-00 SC400, 02-10 SC430
- Compatible with (cont): LINCOLN: 00-06 LS; MERCEDES-BENZ: 02-04 C32, 05-07 C55, 03-06 CLK55, 00-04 SLK230, 02-04 SLK32, 06-11 SLK55; MITSUBISHI: 11-17 Lancer, 11-20 Outlander Sport; NISSAN: 99-01 Altima, 99-00 Frontier, 98-00 Pathfinder
- Compatible with (cont): PONTIAC: 03-06,09-10 Vibe; SCION: 05-10 tC, 08-12 xB; SUBARU: 10-13 Legacy, 10-15 Outback; SUZUKI: 06-08 Grand Vitara, 04-11 Swift/Swift+, 04-06 Verona, 05-06 XL-7; TOYOTA: 03-09 4Runner, 95-04 Avalon, 92-11 Camry
- Compatible with (cont): TOYOTA: 92-05 Celica, 05-06,09-10,12-13 Corolla, 01-10 Highlander, 98-07 Land Cruiser, 03-06,09-12 Matrix, 92-95 MR2, 96-08 RAV4, 05-12 Sequoia, 98-06 Sienna, 99-08 Solara, 93-98 Supra, 05-10 Tundra; VOLVO: 07-10 S80, 05-11 XC90

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0792LVCZW |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #30,667 in Automotive ( See Top 100 in Automotive ) #186 in Automotive Replacement Spark Plugs |
| Brand | Bosch |
| Brand Name | Bosch |
| Compatible with Vehicle Type | Car, SUV, Truck |
| Core Material | Iridium |
| Customer Reviews | 4.6 out of 5 stars 714 Reviews |
| Global Trade Identification Number | 00028851010382 |
| Included Components | Spark Plugs |
| Item Type Name | Spark Plugs |
| Item Weight | 6.88 ounces |
| Manufacturer | Bosch Automotive |
| Manufacturer Part Number | 9603 |
| Manufacturer Warranty Description | Limited |
| Model Number | 9603 |
| Number of Items | 1 |
| Thread Size | M30 |
| Top Material Type | Iridium |
| UPC | 028851010382 |
| Unit Count | 1 Count |
| Vehicle Service Type | Car, SUV, Truck |

## Product Details

- **Brand:** Bosch
- **Core Material:** Iridium
- **Thread Size:** M30
- **Top Material Type:** Iridium
- **Vehicle Service Type:** Car, SUV, Truck

## Images

![9603 OE Fine Wire Double Iridium Spark Plug - Advanced Original Equipment Technology with 4X Life - Pack of 4 - Image 1](https://m.media-amazon.com/images/I/71FZXJroy2L.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by N***I on June 8, 2026*

Fit my outback well and works good

### ⭐⭐⭐⭐⭐ Didn’t think I needed them
*by M***K on February 1, 2026*

2012 2.5 Toyota engine running smooth, exceeding freeway mileage rating in mixed driving, 80000 miles with Carfax reported plug change at 50000 - what difference will replacement spark plugs make? Give it try. $30 and a half hour of work. Old ones were factory spec and visibly but not terribly crusty/worn, so maybe Carfax was wrong about the early replacement by the former owner; still, oem are rated for 100k-120k. Result? Perceptibly smoother engine; 100 lower idle RPM; 1.5 mpg improvement. So yeah, significant improvement. Moral: a good DIY project but if I had been faced with a $300 shop estimate…. Observation: those casual mechanics hanging looking to install basic parts around car parts shops probably do more to keep 7-year + vehicles on the road than dealerships who think in terms of $300-$500-$700 price points.

### ⭐⭐⭐⭐⭐ I can feel a difference in the drive.
*by D***N on June 19, 2025*

My old plugs were autolite xp iridiums and they had been in for a long time, finally getting about 1`00k miles and due for replacement. My Scion XB 2.4 still started, ran fine, and had no codes. My main concern was that the old plugs would get stuck in the cylinder head, despite using anti seize coating some years ago. The old Autolite XPs came out fine and new Bosch double iridiums were a perfect fit. The old plugs appeared fine, no damage, some central wire wear with a corresponding gap increase. Bosch double iridiums have the hard iridium surface on both the wire surface and the tip and should be more wear resistant than single iridium surface plugs where the center wire will wear off. On starting the engine a smooth idle was apparent but driving revealed that the engine was now more responsive at low rpms and pulled much more smoothly allowing me to shift my manual transmission at low rpm with improved torque. Additionally, on entering the highway I noted that there was no longer a surge when the rpm crossed 3000 rpm, it was smooth, linear and felt stronger. Additionally my factory mpg gauge shows a slight mpg increase. So far I am very happy with the investment in these plugs- 1. Chrome coating on the thread surface means I don't have to worry if I have to ever chance these plugs again, and no anti seize coating is needed. 2. The increase in torque, especially at lower rpms enables me to shift earlier and use less throttle. This increases gas mileage. The old plugs had what I estimate was a .004 inch increase in gap. A more robust spark at low rpms may increase the torque. Or perhaps the 30% advertised decreased voltage required to jump the spark gap allows a hotter spark which causes a better ignition. 3 Bosch guarantees these for 7 years. That's pretty darn good, although the Autolite plugs have a lifetime warranty. In seven years you ought to pull them anyway just to check them.

## Frequently Bought Together

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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-08-26*