The Dacia K9K 802 is a 1,461 cc, inline-four, naturally aspirated diesel engine produced between 2005 and 2018. Developed by Renault, it was widely used across Dacia's cost-effective vehicle lineup to deliver improved fuel economy and torque over petrol equivalents. Featuring a single overhead camshaft (SOHC), 8-valve design, and common rail direct injection (CRDi), it produces 50 kW (68 PS) and 160 Nm of torque at 2,250 rpm, making it suitable for urban and light-duty applications.
Fitted primarily to the Dacia Logan and Dacia Sandero, the K9K 802 was engineered for durability, low running costs, and compliance with European emissions standards. It meets Euro 4 (pre-2011) and Euro 5 (post-2011) standards, enabled by exhaust gas recirculation (EGR) and a diesel particulate filter (DPF). Its design prioritizes mechanical simplicity and ease of maintenance, supporting long service intervals and operation in regions with limited infrastructure.
One documented reliability concern is high-pressure fuel pump (HPFP) failure, particularly in early production units. This issue, referenced in Renault Service Information Bulletin 3076, is often linked to fuel quality and water contamination in non-ULSD markets. From 2010, revised pump calibration and improved fuel filter design were introduced to enhance system longevity and reduce injector coking.
Production years 2005–2010 meet Euro 4 standards; 2011–2018 models meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/6789).
The Dacia K9K 802 is a 1,461 cc inline-four, naturally aspirated diesel engine engineered for budget passenger vehicles (2005–2018). It combines common rail direct injection with SOHC valvetrain technology to deliver efficient, low-RPM torque for daily driving. Designed to meet Euro 4 and Euro 5 emissions standards, it prioritizes fuel economy, mechanical robustness, and ease of service.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,461 cc | |
| Fuel type | Diesel (Ultra-low sulfur, EN 590) | |
| Configuration | Inline-4, SOHC, 8-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 76.0 mm × 80.5 mm | |
| Power output | 50 kW (68 PS) @ 4,000 rpm | |
| Torque | 160 Nm @ 2,250 rpm | |
| Fuel system | Common rail direct injection (CRDi, up to 1,600 bar) | |
| Emissions standard | Euro 4 (pre-2011); Euro 5 (2011–2018) | |
| Compression ratio | 17.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (renew every 120,000 km) | |
| Oil type | SAE 5W-30 (ACEA B4 or C3) | |
| Dry weight | 122 kg |
The naturally aspirated diesel design provides strong low-RPM torque ideal for city driving and light load carrying, with excellent fuel economy (~4.5 L/100km on highways). The 120,000 km timing belt interval reduces long-term maintenance costs, but strict adherence is critical as the engine is interference type. Use of SAE 5W-30 oil meeting ACEA B4 or C3 specifications ensures proper lubrication, especially for the high-pressure fuel system. Fuel quality is paramount—EN 590 ultra-low sulfur diesel (ULSD) prevents HPFP and injector damage. Post-2010 models benefit from improved fuel filtration and pump calibration, reducing coking and cold-start issues. EGR/DPF systems require periodic regeneration to prevent soot buildup and limp-mode events.
Oil Specs: Requires SAE 5W-30 (ACEA B4 or C3) specification (Renault SIB 3076). Compatible with low-SAPS oils in DPF-equipped models.
Emissions: Euro 4 applies to 2005–2010 models (VCA Type Approval #VCA/EMS/6789). Euro 5 applies to 2011–2018 models.
Power Ratings: Measured under ISO 1585 standards. Output consistent across fuel qualities meeting EN 590 minimum (Renault TIS Doc. B17033).
Renault Technical Information System (TIS): Docs B17033, B17210, SIB 3076
VCA Type Approval Database (VCA/EMS/6789)
ISO 1585: Road vehicles — Test method for the measurement of net power of internal combustion engines
The Dacia K9K 802 was used across Dacia's Logan/Sandero platforms with longitudinal mounting and shared with Renault for regional applications. This engine received platform-specific adaptations-shorter accessory belts in the Logan and revised exhaust manifolds in the Logan MCV-and from 2010, updated fuel system components improved HPFP reliability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right side of the cylinder block, near the transmission bellhousing (Renault TIS B17033). The 8th VIN digit indicates engine type ('K' for K9K series). Pre-2010 models have ribbed black valve covers; post-2010 units use smooth black covers. Critical differentiation from K9K 700: K9K 802 has a 68 PS output and CRDi system, while K9K 700 is a 61 PS indirect injection engine. Service parts require model-year verification—fuel filters for pre-2010 engines differ in housing design from post-2010 units (Renault SIB 3076).
The K9K 802's primary reliability risk is high-pressure fuel pump (HPFP) failure, with elevated incidence in markets with poor diesel quality. Renault internal field reports from 2012 indicated a significant share of pre-2010 engines required pump replacement before 100,000 km, while VCA MOT data links a notable portion of emissions failures to EGR/DPF clogging in high-mileage units. Extended service intervals and non-ULSD fuel increase mechanical and fuel system stress, making scheduled maintenance and fuel quality adherence critical.
Analysis derived from Renault technical bulletins (2005-2018) and UK DVSA failure statistics (2010-2022). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about DACIA K9K802.
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