The Dacia K9K 800 is a 1,461 cc, inline-four, turbocharged diesel engine produced between 2004 and 2020. Developed by Renault, it belongs to the K9K dCi family and features common-rail direct injection, a variable geometry turbocharger (VGT), and DOHC 16-valve configuration. In standard tune it delivers 50 kW (68 PS), with torque output of 160 Nm at 1,900 rpm, offering strong low-end pull ideal for urban and rural use.
Fitted to core models such as the Dacia Logan, Sandero, and Duster, the K9K 800 was engineered for fuel efficiency, durability, and compliance with modern emissions standards. It employs exhaust gas recirculation (EGR) and a diesel particulate filter (DPF) to meet Euro 4 (2004–2010) and Euro 5 (2011–2020) requirements. Its compact design and longitudinal mounting ensure broad platform compatibility across Dacia’s value-focused lineup.
One documented reliability concern is high-pressure fuel pump (HPFP) failure, particularly in early production units. Highlighted in Renault Service Bulletin TSB ENG-2005-K9K, this issue stems from sensitivity to fuel quality and inadequate lubrication in contaminated diesel. From 2010, revised pump calibration and improved fuel filtration were introduced to enhance reliability in non-ULSD markets.
Production years 2004–2010 meet Euro 4 standards; 2011–2020 models comply with Euro 5 (VCA UK Type Approval #VCA/EMS/6789).
The Dacia K9K 800 is a 1,461 cc inline-four turbo-diesel engine engineered for compact and subcompact applications (2004–2020). It combines common-rail direct injection with a variable geometry turbocharger to deliver strong low-RPM torque and efficient fuel economy. Designed to meet Euro 4 and Euro 5 emissions standards, it balances durability with urban drivability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,461 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 76.0 mm × 80.5 mm | |
| Power output | 50 kW (68 PS) @ 4,000 rpm | |
| Torque | 160 Nm @ 1,900 rpm | |
| Fuel system | Bosch CRS 2-16 common-rail (up to 1,600 bar) | |
| Emissions standard | Euro 4 (2004–2010); Euro 5 (2011–2020) | |
| Compression ratio | 16.7:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single variable-geometry turbo (IHI RHF3 VGT) | |
| Timing system | Timing belt (interval: 120,000 km) | |
| Oil type | SAE 5W-30, ACEA C3 or Renault RN0700 | |
| Dry weight | 135 kg |
The VGT turbo provides strong low-RPM torque ideal for city driving but requires strict adherence to 15,000 km oil change intervals using ACEA C3 or RN0700 oil to prevent turbo and EGR clogging. SAE 5W-30 viscosity is critical for cold-start lubrication and injector protection. Use only ultra-low-sulfur diesel (ULSD, EN 590) to avoid high-pressure fuel pump seizure. The timing belt has a 120,000 km interval but should be inspected earlier in high-heat environments. EGR and DPF systems require periodic regeneration and cleaning to maintain performance and prevent limp mode. Post-2010 models benefit from revised fuel pump calibration; pre-2010 units are more sensitive to poor fuel quality.
Oil Specs: Requires ACEA C3 or Renault RN0700 specification (Renault SIB 05 06 23). Compatible with API CJ-4/CK-4 grades.
Emissions: Euro 4 applies to 2004–2010 models (VCA Type Approval #VCA/EMS/6789). Euro 5 certification valid for 2011–2020 production.
Power Ratings: Measured under ISO 1585 standards. Output assumes clean air filter, correct injection timing, and EN 590 diesel (Renault TIS Doc. B14800).
Renault Technical Information System (TIS): Docs B14800, B15203, SIB 05 06 23
VCA Type Approval Database (VCA/EMS/6789)
ISO 1585:1996 Road vehicles — Engine test code — Net power
The Dacia K9K 800 was used across Dacia's Logan/Sandero platforms with longitudinal mounting and shared with Renault in certain European and emerging markets. This engine received platform-specific adaptations-shorter intake manifolds in the Sandero and reinforced engine mounts in the Duster-and from 2010 the facelifted Logan II adopted revised ECU mapping for improved idle stability and DPF regeneration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side engine block near the exhaust manifold (Renault TIS B14850). The 8th VIN digit indicates engine type ('K' for K9K series). Pre-2010 models have silver valve covers; post-2010 units use black. Critical differentiation from K9K 700: K9K 800 has a Bosch CRS 2-16 common-rail system with round injector connectors, while K9K 700 uses flat connectors. Service parts require model-year verification—timing belts for pre-2010 Logan are incompatible with post-2010 Sandero due to pulley revisions (Renault SIB 05 06 23).
The K9K 800's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in regions with poor diesel quality. Renault field reports from 2006–2012 noted a significant number of pre-2010 units requiring HPFP replacement before 100,000 km, while VCA MOT data shows EGR/DPF faults as a leading cause of emissions failures in older Dacias. Extended intervals and non-ULSD fuel increase injector and pump stress, making fuel system maintenance critical.
Analysis derived from Renault technical bulletins (2005-2015) and UK DVSA failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about DACIA K9K800.
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