The Volvo B27A is a 2,664 cc, V6 petrol engine produced between 1982 and 1986. It features an all — aluminum block and cylinder heads, single overhead camshaft per bank (SOHC), and Bosch K — Jetronic mechanical fuel injection. This unit delivered 155 bhp (115 kW) and 22.5 kgf·m (221 Nm) of torque, offering a significant step up in refinement and smoothness for Volvo's flagship models.
Fitted exclusively to the 260 Series (264, 265) sedans and wagons, the B27A was engineered fo…
Production years 1982–1986 meet US Federal emissions standards for the respective model years (VCA UK Type Approval not applicable for US-spec vehicles).
The Volvo B27A is a 2,664 cc V6 petrol engine engineered for flagship sedans and wagons (1982-1986). It combines an all-aluminum construction with Bosch K-Jetronic mechanical fuel injection to deliver smooth, refined power and meet US Federal emissions standards. Designed for durability, it prioritizes quiet operation and serviceability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,664 cc | |
Fuel type | Petrol | |
Configuration | V6, SOHC, 12-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 88.9 mm × 75.0 mm | |
Power output | 155 bhp (115 kW) @ 5,400 rpm | |
Torque | 221 Nm (22.5 kgf·m) @ 3,700 rpm | |
Fuel system | Bosch K-Jetronic mechanical fuel injection | |
Emissions standard | US Federal (1982-1986) | |
Compression ratio | 9.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven camshafts | |
Oil type | SAE 10W-40 (API SF/CC) | |
Dry weight | 185 kg (approx.) |
The Volvo B27A was used across Volvo's 260 Series platform with longitudinal mounting. This engine received minor platform-specific adaptations-different engine mounts and accessory brackets between sedan and wagon-and from 1984 the water pump was revised, creating a key service part distinction. All adaptations are documented in OEM technical bulletins.
The B27A's primary reliability risk is water pump failure, with elevated incidence in high-mileage or neglected vehicles. Volvo service bulletins from the era highlight this as a common cause of coolant loss and overheating, while aggregated owner data consistently shows that replacing the pump with the revised part is a highly effective preventative measure for long-term engine survival.
Analysis derived from Volvo technical bulletins (1982-1986) and aggregated data from Volvo Owners Club technical forums (2010-2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
Yes, the B27A is fundamentally a very smooth and reliable engine, provided the cooling system (especially the water pump) is maintained and the timing chain components are inspected/replaced as needed. Its all-aluminum construction is robust. Addressing the known water pump issue on pre-1984 engines makes it an excellent long-term prospect.
The most critical issue is water pump failure on pre-1984 engines. Other common problems include malfunctions of the Bosch K-Jetronic fuel injection system, wear of the timing chain guides, and leaks from the intake manifold gaskets. These are well-documented in period service literature.
The B27A was used exclusively in the Volvo 260 Series, including the 264 (sedan) and 265 (wagon) models, from 1982 to 1986. It was typically found in GLE and GLT trim levels in markets requiring stricter emissions controls, like the United States.
Yes, modest power gains are possible. Common upgrades include installing a performance camshaft, porting and polishing the cylinder heads, upgrading the exhaust manifold and system, and adjusting the K-Jetronic fuel pressure. Significant gains are limited by the engine's 12-valve design and emissions equipment.
Fuel economy is modest for its size. Expect around 16-19 mpg (US) or 15-18 L/100km in mixed driving for a 260 sedan. Highway cruising can yield up to 22-24 mpg (US) or 11-12 L/100km. The K-Jetronic system is generally more efficient than carburettors but less so than modern electronic injection.
Yes. The Volvo B27A is an interference engine. If the timing chain breaks or jumps teeth, the pistons will collide with the open valves, causing severe internal damage that typically requires a complete engine rebuild. This makes inspecting and replacing the chain and guides a critical maintenance item.
Volvo originally specified SAE 10W-40 engine oil meeting API SF/CC standards. A high-quality modern 10W-40 or 15W-40 mineral or semi-synthetic oil is perfectly suitable. Change the oil and filter every 3,000-5,000 miles for optimal engine protection.
Comprehensive technical documentation and regulatory references
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VOLVO Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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